Everything we’ve checked

• Their own site is inconsistent. The product page claims certified PFOA- and PTFE-free; the separate skillet brand page claims “Free from PFOA, PFAS’s, PTFE & coatings”. Only the narrower claim is covered by the certificates. [2]
• The same brand page says “FDA Certified”. The FDA does not certify cookware — it regulates food-contact substances. Marketing overstatement on an otherwise well-documented brand. [2]
• Independent tester Tamara Rubin reports, by XRF, 16,400 ppm lead on the bottom logo mark of an Xtrema Versa Pot, and 7,258 ppm on the bottom label of a Ceramcor Xtrema saucepan. We could find no published reading for this skillet, though her archive does include a Ceramcor-made frying pan sold under another brand at 14,900 ppm — so read the absence as an absence, not a clean bill. XRF measures total content in the material scanned; it does not measure what leaches into food. Xtrema’s claim is specifically “no extractable lead” and their SGS certificates are leach tests. The two measure different things. A documented dispute, not a finding either way. [4] [5] [6]
• No maximum oven temperature published anywhere we could find. Thermal shock will crack it — their own care guidance warns against cold water and cold countertops. [1]

Sources (6)

1. Xtrema Classic Skillet product page
2. Xtrema skillet brand page — the PFAS and “FDA Certified” wording
3. Xtrema product testing — dated SGS certificates
4. Tamara Rubin, XRF reading on the Xtrema 1.25qt Versa Pot (June 2022)
5. Tamara Rubin, Ceramcor Xtrema saucepan update (2018)
6. Tamara Rubin, full Xtrema testing archive

• Says it was third-party tested under European food-contact regulations and gives a report number, but does not name the laboratory or publish the report. [1]
• “Made in Italy and the US” is not broken down by component. [1]
• A 2023 class action over “PFOA free” and “100% non-toxic” claims concerned Made In’s non-stick line, not this pan. The plaintiffs voluntarily dismissed it with prejudice in April 2025 — there was no ruling on the merits, and the fullest public account of it is Made In’s own blog post. [2] [3]

Sources (3)

1. Made In Stainless Clad Frying Pan, 10 inch
2. Made In’s own account of the 2023 lawsuit
3. Complaint coverage, Elseroad v. Boston Foundry (W.D. Tex.)

• Loses points against an uncoated steel pan only because seasoning is an applied layer — but it is a named one, which is the distinction that separates Smithey from Lodge here. [1] [2]
• Two of their own pages differ slightly: the AB 1200 page says “free from PFOA and PTFE”, the product page adds PFAS. The disclosure page carries the narrower and more defensible claim. [1] [2]
• No maximum oven temperature published, which is unusual for a pan most buyers will put under a broiler. [1]
• 8.7 lb for a 12-inch skillet — heavier than most, and Smithey publishes the figure rather than leaving you to find out. [1]

Sources (2)

1. Smithey No. 12 Cast Iron Skillet
2. Smithey AB 1200 disclosure — full casting chemistry and the ASTM steel spec

• The page claims “18/10” for the outer layers while also claiming induction compatibility. 18/10 is austenitic and only weakly magnetic; induction normally requires a ferritic outer layer such as 430. Tramontina does not reconcile this, and the exterior grade is not separately named. [1]
• Neither country of manufacture nor warranty terms appear on the product page — a real gap on a pan at this price. [1]
• Tramontina’s chemicals disclosure is a PDF behind a help-desk article. Its only explicit statement is a Colorado one: intentionally added PFAS “are added to give these products nonstick properties” — undifferentiated across every line they sell, including this uncoated one. [2]

Sources (2)

1. Tramontina Signature Tri-Ply Clad stainless fry pan
2. Tramontina chemicals disclosure (help desk)

• They do publish something. Lodge’s California AB 1200 disclosure lists the elements in seasoned cast iron — iron, phosphorus, manganese, strontium, plus carbon, silicon and sulfur — and a separate, longer list for the enamelled line including nickel, cadmium and chromium compounds. That is a statutory self-declaration against a designated chemical list, not third-party testing: no laboratory is named and no report is published, which is why it counts as a declaration rather than an independent test. [3]
• No numeric oven or maximum heat guidance published anywhere we could find. [1]
• The lifetime warranty is void if you put it in the dishwasher, soak it, or microwave it. It also excludes rust, pitting, sticky seasoning and flaking — which is most of what actually goes wrong with cast iron. [2]

Sources (3)

1. Lodge Classic Cast Iron Skillet
2. Lodge “Made Right” warranty terms and exclusions
3. Lodge California AB 1200 materials disclosure

• Seven plies is unusual, and the maker does not state which layers are aluminium, which are copper and which are steel. Ply count without a layer breakdown is a number rather than a specification. [1]
• Zwilling routes all AB 1200 disclosure for Demeyere, Staub, Ballarini and Miyabi to a single third-party search portal rather than a readable page. We could not retrieve it, so this product scores zero for backing despite almost certainly having a filing. [2]
• Lifetime warranty stated on the product page with no exclusions published there. [1]

Sources (2)

1. Demeyere Atlantis Proline 9in fry pan
2. Zwilling regulatory information portal — search-gated, not retrievable

• The 400°F-for-under-ten-minutes oven limit is imposed by the epoxy handle coating, not by the steel. Buyers who assume carbon steel is oven-proof will exceed it, and the page does not explain why the number is so low. [1]
• Makes no “free of” claim at all — which on a bare iron pan is arguably more credible than the brands that do. [1]
• Never dishwasher safe, and the beeswax must be removed and the pan seasoned before first use. Neither step is optional. [1]
• We found no AB 1200 disclosure for de Buyer, so this scores zero for backing. [1]

Sources (1)

1. de Buyer MINERAL B fry pan

• Their California AB 1200 disclosure does name the elements in D3 — total chromium and chromium compounds, nickel and nickel compounds, iron, manganese, phosphorus, copper, and aluminium. Useful if you react to nickel. But it is a self-declaration against a statutory list, not third-party testing, and it still stops short of naming the stainless grade. [4]
• A $4M settlement over “dishwasher safe” marketing covered “All-Clad D3, D5 or LTD cookware”, with final approval heard in January 2023. The damage described — surface peeling leaving sharp edges — points at coated products rather than bare stainless, so how it applies to this pan is unclear. [2]
• Parent company Groupe SEB is currently suing Caraway, also in this table, over its PFAS marketing. Worth knowing before you read anyone’s comparison of the two. [3]

Sources (4)

1. All-Clad D3 10-inch fry pan
2. Coverage of the All-Clad “dishwasher safe” $4M settlement
3. Reporting on Groupe SEB and Meyer v. Caraway
4. All-Clad California AB 1200 and chemical disclosures

• “Pre-seasoned” here means a silicone release coating, not a polymerised oil seasoning. That is materially different from de Buyer’s beeswax or Matfer’s vegetable oil, and it burns off rather than building up. [1]
• The Cookware Company’s AB 1200 disclosure lists cadmium compounds and antimony compounds for Merten & Storck cookware. Those appear for no other brand in this category except Lodge’s coloured enamel. [2]
• Merten & Storck is a GreenPan / Cookware Company brand, not the independent German maker the name suggests. [1] [2]
• Neither country of manufacture nor carbon steel grade is published. [1]

Sources (2)

1. Merten & Storck Carbon Steel 12in Frypan
2. GreenPan California AB 1200 disclosure — cadmium and antimony compounds

• Claims 800°F oven safety — identical to Heritage Steel’s — with no stated handle or rivet material to support it. [1]
• Credit: country of production is stated plainly as PRC, which many competitors here omit entirely. [1]
• Misen’s disclosures page is indexed by third-party trackers but would not load for us, so the AB 1200 chemical list is unverified. [1] [2]
• The page states only that “stainless steel is not nonstick” and makes no “free of” claim, which is the right restraint for an uncoated pan. [1]

Sources (2)

1. Misen 5-Ply Stainless Steel Skillet
2. Misen disclosures page — would not load

• “PTFE and PFOA free” is doing no work here. PFOA was phased out of US cookware manufacturing by 2015, and this pan has no coating at all. Note they claim PTFE- and PFOA-free but not PFAS-free. [1]
• No maximum oven temperature published, despite the rivetless all-steel handle making this the most oven-tolerant pan in the carbon steel group. A missed disclosure in the brand’s own favour. [1] [2]
• No price on the manufacturer’s own site — it is a trade and foodservice channel, and the “where to buy” link goes to resellers. [1]
• We found no AB 1200 disclosure for Matfer Bourgeat. [1] [2]

Sources (2)

1. Matfer Bourgeat Black Carbon Steel Round Frying Pan, 10.25in
2. Matfer Bourgeat — The Black Carbon Steel Guide

• No steel grade anywhere. No 18/10, no 304. For a pan whose selling point is the steel, that is the one number missing. [1]
• “Ergonomic stay-cool handles and helper handles” — material not published. [1]
• “Crafted by European artisans” sits alongside “Made in Portugal” for the pans and “Made in China” for the accessories. Both are stated, which is more than most manage. [1]
• Oven to 500°F, dishwasher and metal-utensil safe, induction compatible. No third-party testing cited. [1]

Sources (1)

1. Costco — Le Creuset 9-Piece Stainless Steel Cookware Set

• The “free of” claim contains a typo — “PTE” — in what is otherwise the company’s most legally exposed sentence. [1]
• Flaxseed-oil seasoning is known to be more brittle and more prone to flaking than grapeseed or soybean. The maker presents it as a premium feature; Smithey, on this same page, uses grapeseed. [1] [2]
• “Guaranteed Good Forever” requires returning the pan to FINEX for evaluation. For a twelve-inch cast iron skillet that shipping cost is a meaningful fraction of a replacement. [1]
• No maximum oven temperature, broiler guidance, induction statement or dishwasher guidance published anywhere. [1]

Sources (2)

1. FINEX 12in Cast Iron Skillet
2. FINEX California AB 1200 disclosure — lead in the brass caps and knobs

• The claim is written as “Our PFAS-free Ceramic Nonstick is Made Without Intentionally Added PFAS”. Those are two different claims in one sentence, and only the second one is a commitment. It permits residual PFAS from feedstock or process. [1]
• On testing they are more specific than most: Thermolon “was tested by third-party labs, and is certified safe according to USA Food & Drug Administration, German LFGB, Swiss government, and KTR standards”. Four named regimes is more than a bare assertion, so that is more than most. It stops short of full marks because no laboratory is named and no certificate is published or downloadable — you are asked to take the conclusion on trust. [2]
• Does not address lead or cadmium on the product page or the toxins FAQ we checked. [1]
• A 2019 class action over “0% Toxins” and “completely toxin free” marketing ended in dismissal with prejudice. Reporting suggests a settlement; we could not verify the terms or the docket entry, and GreenPan’s own account is that it concluded “with no findings of liability and no admission of wrongdoing”. Both of those can be true at once. [3] [4]

Sources (4)

1. GreenPan Valencia Pro 12-inch frypan
2. GreenPan FAQ: do GreenPan products have toxins
3. GreenPan’s own account of the 2019 lawsuit
4. Truth in Advertising case file, Saldivar v. The Cookware Company

• No lead or cadmium statement at all, on a coloured enamel product — where Lodge, by contrast, discloses cadmium compounds in its red and orange enamel. [1] [2]
• The “our materials” page is marketing copy — “unrivaled vibrant enamel finishes” — with no composition content whatsoever. [2]
• Le Creuset sells PTFE nonstick lines alongside its enamelled cast iron, and the SKU-gated disclosure makes it hard for a buyer to tell which line they are reading about. [1] [3]
• Credit: enamelled cast iron requires no seasoning and has no coating recipe that degrades with use in the way a sol-gel or fluoropolymer surface does. The material is sound; the documentation is not. [1]

Sources (3)

1. Le Creuset Signature Skillet
2. Le Creuset — enamelled cast iron materials page
3. Le Creuset California chemical disclosures for cookware (AB 1200) — redirect only

• Like Demeyere, Staub’s AB 1200 disclosure sits behind Zwilling’s regulatory search portal rather than a published table. We could not retrieve it. Given Lodge discloses cadmium compounds in coloured enamel, a coloured Staub with no readable disclosure is a genuine gap. [2]
• No lead or cadmium statement of any kind on the product page. [1]
• Listed at 36% below list price at the time of reading. Zwilling list pricing on Staub colours is not a stable reference point. [1]
• Made in France, stated plainly, and requires no seasoning. [1]

Sources (2)

1. Staub 7 qt Round Cocotte
2. Zwilling regulatory information portal — search-gated, not retrievable

• No country of manufacture stated anywhere we could find — only “mindfully manufactured in BSCI-certified factories”. That is not a country. [1]
• The warranty is one year and explicitly excludes coating deterioration from high heat, thermal shock and metal utensils — which tells you what Caraway expects to go wrong. [5]
• August 2025: the National Advertising Division found Caraway did have a reasonable basis for its own “PFAS-free” and “non-toxic” product claims, but recommended it discontinue comparative claims disparaging competitors, including its framing of rising “Teflon flu” cases. [3]
• February 2026: Groupe SEB and Meyer sued Caraway in the Southern District of New York for false advertising, commercial disparagement and trade libel. It is pending with no ruling. Draw nothing from it yet. Note also that Groupe SEB owns All-Clad, which is also in this table. [4]

Sources (5)

1. Caraway Fry Pan product page
2. Caraway third-party testing hub
3. BBB National Programs — NAD decision on Caraway, August 2025
4. Reporting on Groupe SEB and Meyer v. Caraway (filed Feb 2026)
5. Caraway warranty terms

• Same corporate parent, two different claim strengths: Blue Diamond says “free of PFAS” flat, while GreenPan-branded pages from the same company say “made without intentionally added PFAS”. Both coatings are in the Thermolon family. [1] [3]
• “Diamond-infused” is a thermal-conductivity claim, not a safety or durability one. The binder chemistry — a sol-gel silica — is never named as such. [1] [2]
• The FAQ tells you in advance that damage is normal: “scratches, dents, or pits in the coating won’t affect the safety or performance of your pan”. That functions as a coating-wear exclusion without being labelled one, and refunds are explicitly not available. [2]
• A 600°F oven-and-broiler rating is aggressive for a sol-gel coating. Credit for naming the silicon dioxide origin at all — no air fryer maker we read would go even that far. [1] [2]

Sources (3)

1. Blue Diamond Classic 12in Frypan
2. Blue Diamond FAQs — silicon dioxide origin, China manufacture, scratches and pits
3. Blue Diamond California AB 1200 disclosure

• “EverGood” is a trade name. “Ceramic” is a family. Neither is a chemistry — no sol-gel system, no binder, no silica content. [1]
• “Dishwasher safe, though handwashing is recommended” — a dishwasher claim undercut inside the same sentence. [1]
• A 500°F oven rating is at the top of what a ceramic sol-gel coating tolerates, and no explanation accompanies it. [1]
• No country of manufacture, no warranty, no third-party testing or certification. That holds for all twenty-one Walmart house-brand products we checked. [1]
• Per Defend Our Health, Beautiful’s own California AB 1200 page “discloses PFAS in air fryers, waffle makers, griddles, and other appliances with specific model numbers listed”. That page was unreachable to us, so which models appear on it is unconfirmed — and it is the single most useful thing anyone could check about this brand. [2]

Sources (2)

1. Walmart — Beautiful 12-Piece EverGood Ceramic Cookware Set
2. Defend Our Health — cookware materials disclosures index

• Across four Thyme & Table cookware sets from $59 to $197, not one names a coating chemistry. Price buys nothing here. [1] [2] [3]
• “Ergonomic riveted handles”, gold-finished — material not stated. Lid seals are described only in customer reviews as rubber or silicone, which is a shopper’s guess, not a manufacturer statement, and we do not score it. [1]
• Oven safe to 500°F on a ceramic coating, with no explanation. [1]
• Thyme & Table is a Walmart-owned cookware brand and we could locate no California AB 1200 disclosure for it. Neither could Defend Our Health, whose index covers the major cookware brands and does not list it, nor Mainstays, nor The Pioneer Woman. Three Walmart-owned cookware brands, no locatable disclosures. [4]

Sources (4)

1. Walmart — Thyme & Table Signature 12-Piece Set
2. Walmart — Thyme & Table Supreme 12-Piece Set
3. Walmart — Thyme & Table Hard Anodized 15-Piece Set
4. Defend Our Health — cookware materials disclosures index

• This is the clearest trade-name-where-a-material-should-be case we have found. “MineralShield” reads as a mineral or ceramic coating to any normal buyer. It is PTFE. [1] [2]
• Credit, oddly: Calphalon is one of the few makers to concede in its own words that PTFE is a PFAS. T-fal, on this same page, argues the opposite. [2]
• At $119.99 this is the most expensive fluoropolymer pan here, and the only one that neither names its coating on the product page nor publishes a country of manufacture. [1]
• 450°F and explicitly not broiler safe — more restrictive than All-Clad’s HA1 at a similar price. [1]

Sources (2)

1. Calphalon Premier Hard-Anodized Nonstick 12in Frying Pan with Lid
2. Calphalon product disclosures — “PFAS (PTFE)”

• “TerraBond” is a trade name standing exactly where a material should be. Even HexClad’s own technical support article declines to name the chemistry, calling it “a proprietary ceramic formula that is PFAS free”. No sol-gel, no silica, no binder is identified. [2]
• We could find no California AB 1200 disclosure for HexClad, and neither could the independent index we checked. A brand that markets on chemical safety and files no findable chemical disclosure is the finding. [3]
• A 900°F oven rating — the highest claimed of any pan here by 100 degrees — on a coating whose composition is undisclosed. No maximum stovetop heat setting is given. [1]
• “Third-party lab Non-Detect” results are referenced on the product page, but the lab, method and report are not published, so the claim itself is unverified. [1]

Sources (3)

1. HexClad 12in Hybrid Frying Pan
2. HexClad support — “What is TerraBond nonstick made from?”
3. HexClad class action settlement site — case, claims and class period

• “Cook over low and medium heat. Never use high heat unless boiling liquids” is the real usability constraint on all PTFE cookware, and All-Clad states it plainly where most competitors bury or omit it. [1]
• Explicitly not for use under the broiler, and the glass lid is rated 150 degrees lower than the pan. [1]
• An All-Clad-branded pan made in China at $99.99, sitting alongside All-Clad’s US-made stainless lines. The origin difference is disclosed but easy to miss. [1]
• All-Clad also sells an “HA1 Ceramic Nonstick” line under the same HA1 name — two different coating chemistries under one sub-brand. [1] [2]

Sources (2)

1. All-Clad HA1 Expert Nonstick Fry Pan with Lid, 12in
2. All-Clad nonstick chemical information

• The product page carries a California Proposition 65 warning for tetrafluoroethylene while simultaneously headlining “PFOA-free”. A Prop 65 warning and a PFOA-free claim on the same page is exactly the pattern worth noticing. [1]
• Credit, and it is real: Scanpan’s is the only warranty in this category that names covered failure modes explicitly — “defects include peeling, pitting, and bubbling of the surface”. Coating wear is covered rather than excluded. Nobody else does that. [3]
• The Bakelite handles are disclosed as containing formaldehyde in the same AB 1200 filing. [2]
• Check Classic against Classic Induction before buying — same name, different cooktop compatibility. This model is gas and electric only. [1]

Sources (3)

1. SCANPAN CLASSIC 10.25in Fry Pan
2. Scanpan declaration — AB 1200: PFAS, PTFE, PFA copolymer, formaldehyde in Bakelite
3. Scanpan FAQ — “Stratanium and Stratanium+ contain some PTFE”

• Costco’s platform carries that disclosure field and its suppliers fill it in. On the same site, Circulon’s Premier Professional 10-piece states “This product contains intentionally added PFAS because of its superior nonstick properties” and lists “Fluoropolymer, PTFE, FEP, PFA (PFAS)”. The mechanism works. Kirkland Signature’s entry is blank. [2]
• Defend Our Health’s index of cookware materials disclosures lists Tramontina, Circulon, Scanpan and Le Creuset. Kirkland Signature and Costco have no entry at all. [3]
• No PFOA claim, no PFAS statement, no BPA statement. The page names the polymer in a spec field and makes no claim about it anywhere. [1]
• Costco’s own chemical-management page returns a 404 and both Smart Screening PDFs return 403. As of this check, Costco has no publicly reachable chemicals policy at the URLs it is indexed under. [4]
• The rest of the set is properly specified: 18/10 cast stainless handles, tempered glass lids with steel rims, made in Thailand, oven-safe to 400°F. Everything except the one field that matters. [1]

Sources (4)

1. Costco — Kirkland Signature 12-Piece Non-Stick Cookware Set
2. Costco — Circulon Premier Professional 10-piece, disclosure field populated
3. Defend Our Health — cookware materials disclosures index
4. Costco chemical management page (returns 404)

• “PFOA-free” dated to 2012 is presented as a differentiator: “T-fal and its suppliers have not used PFOA in their processes since 2012, well before the introduction of regulations”. The US industry-wide phase-out completed by 2015, so this is table stakes rather than a distinction. [3]
• A 400°F oven limit is the lowest of any pan on this page, and the set is not induction compatible. Two hard constraints on a mainstream best-seller. [1]
• “Titanium” in the coating name describes a hardening particle, not the release chemistry. The release chemistry is PTFE. [1] [2]
• The Thermo-Spot indicator turns red between 285°F and 380°F, which is a genuinely useful heat cue and more than most competitors give. [1]

Sources (3)

1. T-fal Ultimate Hard Anodized 2-piece frypan set
2. T-fal AB 1200 disclosure — PTFE, PFA and FEP named under PFAS
3. T-fal — “PTFE nonstick coating explained”

• An empty field is a different kind of absence from a missing one. Walmart built the structure to hold this information and the brand left it blank. [1]
• Non-food parts not specified at all — no handles, no lids, no rivets. [1]
• No PTFE, PFOA, PFAS or BPA claim of any kind. [1]
• Marketing descriptors doing duty as materials across this brand: “Granite”, “Supreme”, “Signature”. None of them is a material. [1] [2]

Sources (2)

1. Walmart — Thyme & Table Granite 12-Piece Set
2. Walmart — Thyme & Table Supreme 12-Piece Set

• The same twelve-piece set in other colourways carries at least some copy. This one carries none, which suggests the difference is listing maintenance rather than product. [2]
• No PTFE, PFOA, PFAS or BPA statement. [1]
• “Oven safe to 500°F” and “compatible with all stovetops including induction” are the only concrete facts published. [1]
• No third-party testing or certification, consistent with every Walmart house-brand product we checked. [1]

Sources (2)

1. Walmart — Beautiful 12-Piece Ceramic Set, Black Sesame
2. Walmart — Beautiful 12-Piece EverGood set, which does carry copy

• This page has no Designated Chemical Disclosure section at all, while its sibling does. Two SKUs of one product line on one retailer, with opposite chemical stories. [1] [2]
• We score the coating as a disclosed fluoropolymer, because the maker’s own filing for the line discloses it. “Toxin-free nonstick” on a PTFE coating is the most misleading single claim we found in American retail. [1] [2]
• “Double-riveted stainless steel handles with silicone grips” and “shatter-resistant glass lids” are named, which is why this scores above the honest sibling. The rubric grades materials, not candour — the candour is what these flags are for. [1]
• Made in Thailand, oven to 400°F, dishwasher safe. No warranty published. [1]

Sources (2)

1. Costco — Circulon Premier Professional 13-Piece
2. Costco — Circulon Premier Professional 10-Piece, PFAS disclosed

• It exists because California AB 1200 and Colorado HB 22-1345 compel it. It is a statutory self-declaration, not third-party testing — no laboratory is named and no report is published, which is why we score it as a filing rather than a test. [1]
• The same brand’s 13-piece set on the same retailer calls the same coating “toxin-free nonstick” and carries no disclosure section at all. [2]
• Handles and lids are not described on this page, which is why it scores below its less honest sibling. That is the rubric measuring materials rather than candour. [1]
• Made in Thailand, oven to 400°F, dishwasher safe. No warranty published on this page. [1]

Sources (2)

1. Costco — Circulon Premier Professional 10-Piece
2. Costco — Circulon Premier Professional 13-Piece, “toxin-free”

• “contains intentionally added PFAS because of its superior nonstick properties” is the brand’s own statutory wording. [1]
• The same product is sold in Australia as ScratchDefense A1, where Circulon’s Australian page says only “Made without PFOA” and no PFAS statement appears. The difference between the two markets is that California has a disclosure law and Australia does not. [2]
• Handle and lid materials are not described on the Costco page. [1]
• Made in Thailand. No third-party testing cited. [1]

Sources (2)

1. Costco — Circulon A1 ScratchDefense 12-Piece
2. Circulon Australia — ScratchDefense A1, “Made without PFOA”

• Across eleven Walmart house-brand cookware listings, from $21.84 to $197, zero name a coating chemistry. The disclosure ceiling for the entire range is the word “ceramic” or the word “nonstick”. [1] [2] [3]
• “Oven safe” with no temperature given — the only number that would make the claim useful on a coated pan. [1]
• No PTFE, PFOA, PFAS or BPA statement. No country of manufacture. No warranty. [1]
• Walmart’s published PFAS policy defines PFAS as “including PFOS, PFOA and PTFE” and permits cookware with intentionally added PFAS “if disclosed on the product label”. That policy governs Marketplace sellers. Walmart’s own private brands are first-party, so it does not reach them. [4]

Sources (4)

1. Walmart — Thyme & Table Supreme 12-Piece Set
2. Walmart — Mainstays 7-Piece Nonstick Aluminium Set, $21.84
3. Walmart — Thyme & Table Hard Anodized 15-Piece Set
4. Walmart Marketplace — Prohibited Products Policy: PFAS chemicals

• “Thermakind” is a trade name, not a disclosed material. [1]
• We went looking again and did find one document: a California AB 1200 disclosure, which lists the Always Pan under aluminium cookware with aluminium, iron, chromium, nickel and manganese as intentionally added. That earns a testing point. Note what it does not cover — those are the metals in the pan body. The coating, which is the entire question here, is not itemised anywhere on it. [3]
• December 2025: the law firm Migliaccio & Rathod opened a consumer investigation covering the Titanium Always Pan Pro and the Always Pan 2.0 — this pan. The allegations under investigation include chipping and flaking within about a year, and that the “PFAS-free” representation may mislead; the separate “coating-free” allegation concerns the titanium model, not this one. No lawsuit has been filed. This is a plaintiffs’ firm at solicitation stage, and should be read as exactly that. [2]
• None of this means the pan is unsafe. It means nobody outside the company can check.

Sources (3)

1. Our Place non-stick Always Pan page
2. Migliaccio & Rathod investigation notice, December 2025
3. Our Place California AB 1200 cookware disclosure

• A coating that must not exceed 350°F for more than half an hour is a meaningful thermal-stability signal, and the page never explains why. Thermal ceilings across Walmart’s own nonstick lines run from 350°F to 500°F with no stated reason for the spread. [1] [2]
• “Dishwasher safe for added convenience” — on a printed-finish handle. [1]
• No PTFE, PFOA, PFAS or BPA claim. [1]
• The Pioneer Woman is a Walmart-owned cookware brand and we could locate no California AB 1200 disclosure for it, nor does Defend Our Health’s index list one. [3]

Sources (3)

1. Walmart — The Pioneer Woman Prairie Signature 8in Fry Pan
2. Walmart — Beautiful 12-Piece EverGood set, 500°F
3. Defend Our Health — cookware materials disclosures index

• An unnamed exterior coating on a nonstick pan is the disclosure gap nobody looks for. It is the layer that meets the burner. [1]
• No PFOA, PTFE, PFAS or BPA claim of any kind. [1]
• “Suitable for all cooktops except induction” and “Dishwasher safe”. [1]
• Mainstays is a Walmart-owned cookware brand and we could locate no California AB 1200 disclosure for it, nor does Defend Our Health’s index list one. If those disclosures genuinely do not exist for Mainstays, The Pioneer Woman and Thyme & Table, that is a compliance question rather than only a transparency one. [2]

Sources (2)

1. Walmart — Mainstays 13-Piece Nonstick Aluminum Alloy Cookware Set
2. Defend Our Health — cookware materials disclosures index

• “Protect nonstick surface using only wood or nylon utensils; avoid metal.” The care instruction tells you the coating is fragile. It does not tell you what it is. [1]
• “Not induction safe and not oven safe. This cookware set is exclusively designed for stovetop cooking environments.” “Never leave empty cookware on a hot burner.” [1]
• Handle material not published. Lids referenced, material not published. [1]
• No dishwasher guidance, no warranty, no country of manufacture, no testing. [1]

Sources (1)

1. Walmart — Mainstays 7-Piece Non-Stick Aluminium Cookware Set

• Counting the coats is the most common way to sound specific while saying nothing. Kmart in Australia does the same thing: “three-layer non-stick coating”, “4 layer stone blast”. [1]
• No PFOA, PTFE, PFAS or BPA claim anywhere. [1]
• “Oven safe up to 400°F”. No dishwasher statement. [1]
• Non-food parts not specified: no handles, no lids, no rivets. [1]

Sources (1)

1. Walmart — Thyme & Table Hard Anodized 15-Piece Set

• “BPA free” on a box with no polymer in it is a non-claim. There is nothing in this product for BPA to be in. Its presence suggests the phrase is on the page for reassurance rather than information — the same empty sentence Thermos and Hydro Flask put on steel. [1]
• Explicitly not leakproof, and it says so on the product page. Full marks for saying it; it rules the box out for anything wet, which is most of what parents want a compartment box for. [1]
• The only lunch box in this category with a published oven temperature — usable in the oven up to 200°C. Nobody else gives a number. [1]
• Priced in GBP with UK-focused shipping. A US buyer’s landed cost cannot be determined from the maker’s site, which is why it sits here as a benchmark rather than a recommendation. [1] [2]

Sources (2)

1. Elephant Box 2L product page
2. Elephant Box classic lunchboxes collection

• “18/8” is an alloy family, not a grade — 304, 302 and 305 all satisfy it, with different corrosion behaviour. OmieBox and Elephant Box on this page both name the actual grade. [1]
• Explicitly not leakproof: “we recommend packing dry foods only”, stated on the product page. Good disclosure, hard constraint. [1]
• Neither a warranty nor a country of manufacture is published. The terms of service carry only a blanket disclaimer that the service is provided “as is… without any representation, warranties or conditions of any kind”. [2]

Sources (2)

1. LunchBots Small Snack Packer product page
2. LunchBots terms of service — the blanket warranty disclaimer

• A straight contradiction between two of their own pages. This 304/18-8 box: “this product is made of steel and CANNOT be used in the microwave”. Their Meal Prep Box Set, also “stainless steel (304/18-8)”, is sold as an “innovative microwave-safe steel box” rated to 1000W. Same maker, same alloy, opposite instruction. [1] [4]
• The warranty excludes the headline feature: the box is sold on being “100% leakproof”, and the silicone seal that delivers that is covered for two years rather than the lifetime the steel gets. [3]
• “BPA free” on an all-steel, explicitly plastic-free product. It was never in question. [1]
• No silicone standard and no country of manufacture, on a site that is otherwise one of the most material-literate we have read. The About page places only the design studio, in London. [1] [2] [5]

Sources (5)

1. Black+Blum Stainless Steel Lunch Box Large
2. Black+Blum — our materials
3. Black+Blum lifetime guarantee — the two-year silicone carve-out
4. Black+Blum Meal Prep Box Set — the contradicting microwave claim
5. Black+Blum about page

• No third-party testing, certification or Prop 65 statement published that we could find. [1]
• No country of manufacture stated on the product page, FAQ or warranty page. [1]
• Not leak-proof. LunchBots’ own advice is to pack dry foods only. [1]
• Lifetime warranty against manufacturing defects, which is generous for the price. [2]

Sources (2)

1. LunchBots Large Cinco product page
2. LunchBots warranty terms

• Grade 201 substitutes manganese for nickel and corrodes more readily than 304. Committing to one grade, or labelling it per product, would cost nothing and would raise this score several points. We have asked them which one ships in this product. [2]
• No warranty published anywhere we could find. [2]
• No lead or metals testing published. [2]
• No gaskets, so not leak-proof. Their separate Splash Box is the leak-proof one, and it seals with silicone — worth knowing if “plastic-free” was the whole reason you were buying. [1]

Sources (2)

1. ECOlunchbox Three-in-One Giant
2. ECOlunchbox FAQ — the “201 or 304” disclosure

• No third-party testing, no certification, no Prop 65 statement. [1]
• No country of manufacture stated on the product page or the FAQ. [1]
• The second claim — “made without PVC, phthalates, lead, or vinyl” — is on Bentgo’s FAQ rather than the product page. [2]
• The 5-year warranty is well above Bentgo’s own stated 1–2 year baseline for most lunch products, which is a decent signal about the line. [2]

Sources (2)

1. Bentgo Kids Stainless Steel Lunch Box
2. Bentgo FAQ — the wider “free of” claim and warranty baseline

• The product page hides the plastics behind “food grade plastic” while the FAQ names ABS and PP. The page a shopper actually reads is the less specific one, and ABS is not a resin most parents expect in a food container. [1] [2]
• “Food grade silicon” is used as though it were a certification. No agency issues one. Neither LFGB nor FDA 21 CFR 177.2600 appears anywhere on the site — and in fact appears on no lunch box maker’s site we read. [2]
• Handwashing is “best” but the site never says the box is not dishwasher safe. Ambiguous guidance on a $50 product whose steel thermos and ABS shell have very different tolerances. [1] [2]
• Credit: country of manufacture stated plainly — “OmieBox is responsibly made in China”. [2]

Sources (2)

1. OmieBox product page
2. OmieBox FAQ — the full material list and country of manufacture

• Marketed under “Stainless Steel Bento Boxes” when the outer box is PP. A buyer scanning the category name would not get that. [1] [2]
• Two of kinsho’s own pages contradict each other on care: the product page says “easily wash the outer box and silicone seals by hand”; the collection page says “bottom box and tray are top shelf dishwasher safe”. The warranty then excludes dishwasher damage to non-dishwasher-safe parts — placing the risk of that ambiguity on the buyer. [1] [2] [3]
• “Japanese grade” describes the standard, not the country. It reads as an origin cue and is not one; origin is unpublished. [1]
• The warranty runs from “6 months to 2 years” depending on the item, and you must find which from the printed instructions rather than the website. That is the shortest floor in this category. [3]

Sources (3)

1. kinsho mini steel bento product page
2. kinsho stainless steel bento collection — the conflicting care advice
3. kinsho warranty policy

• “Food-grade silicone” is used as though it were a certification. No agency issues one, and no standard is named — a direct contrast with PlanetBox on this same page, which names LFGB. [1] [2]
• “Klean Coat®” is an undisclosed powder coating on the lid. The only substantiation offered is that its ingredients were screened with GreenScreen®; the chemistry is never published. [2]
• Credit, and it is real: the most specific thermal guidance of any lunch box here — oven to 350°F for reheating only, microwave under 1000W, never more than five minutes. Numbers, not adjectives. [1]
• “BPA, BPS, BPF… free” asserted on a steel-and-silicone vessel where those monomers were never plausible. [1]

Sources (3)

1. Klean Kanteen 34 oz Rise Food Box
2. Klean Kanteen FAQ — 18/8 definition, Klean Coat, country of manufacture
3. Klean Kanteen warranty

• “Food-grade… one of the highest quality tiers” is marketing. There is no tiered food-grade silicone scheme, and the claim to be “meeting the EU food safety certification” names no directive or regulation. [2]
• “Must meet certain standards set by the FDA to be legally sold in the United States” is a statement about the law, not about this product’s testing. It is phrased so that a reader hears “FDA approved”, which no food container is. [2]
• No warranty terms are published — only a 30-day return window, on a product sold on durability and reuse. [1] [2]
• Credit: an oven rating of 425°F / 218°C with a stated venting instruction for the microwave. Only Elephant Box also publishes a temperature in this category. [1]

Sources (2)

1. Stasher Reusable Silicone Sandwich Bag
2. Stasher materials and FAQ page

• The lid — the part with the seal, the latches and the food contact at the top — has no published material on either model. A steel-bodied box with an undisclosed lid is not an all-steel box, and the listings do not let you tell. [1] [2]
• “Third-party tested to meet rigorous safety standards” names no standard and no laboratory. It is unfalsifiable in the same way “food grade” is. [1]
• There is no warranty, only a “WeeCare Guarantee — not satisfied? We’ll make it right — every time”, with no duration, no defined coverage and no remedy. [1]
• Country of manufacture is not published. [1] [2]

Sources (2)

1. WeeSprout Large stainless bento with silicone sleeve
2. WeeSprout bento with leak-resistant lid — where 304 is named

• “BPA-Free” on a steel jar is the same empty claim Thermos and Elephant Box make. The lid is the only plausibly BPA-relevant part, and Hydro Flask does not say what it is made of. [1]
• Explicitly not freezer safe — unusual in this category, and worth knowing for anyone who batches and freezes. [1]
• The warranty page could not be read: help.hydroflask.com returned page metadata with no body content. We are recording that as blocked, not as absent — duration, coverage and exclusions are unverified from the maker. [2]
• Country of manufacture is not published on the product page. [1]

Sources (2)

1. Hydro Flask 12 oz Kids Insulated Food Jar
2. Hydro Flask Promise / warranty page — returned metadata only

• No steel grade published anywhere, including in Thermos’s own Care & Use PDF. On a vacuum-insulated jar with an inner steel food surface, that is the single most relevant fact and it is missing. [1] [2]
• On 30 April 2026 the CPSC announced a recall of about 8.2 million Thermos Stainless King food jars and bottles: if perishable food is stored for an extended period, “the stopper can forcefully eject when opened”. 27 reports; three people sustained permanent vision loss. The FUNtainer is not in that recall — but the mechanism is pressure from food left in a sealed insulated jar, which is exactly what the FUNtainer’s own 24-hour limit addresses. [3]
• The care guide instructs you to inspect the gasket, a part whose material is never disclosed. [2]
• Credit: the five-year warranty is one of the longer ones here, and country of manufacture is stated as China. [1] [2]

Sources (3)

1. Thermos 10 oz FUNtainer Food Jar
2. Thermos FUNtainer Care & Use guide (PDF)
3. CPSC — Thermos recalls 8.2 million Stainless King jars and bottles, April 2026

• Credit where due: the user manual names four resins by type — ABS shell, PP tray, ABS latches, TPE overlay. That is more than Yumbox or Simple Modern publish anywhere. You just have to open a PDF to find it. [2]
• Warranty length contradicts itself: the manual says a flat “2 Years”, the warranty page says “1 to 2 years… on most lunch boxes” and points back to the manuals. A buyer reading the warranty page cannot tell which they have. [2] [3]
• The seal is never named. On a box whose entire selling proposition is leak-proofing, the one part in permanent contact at the lid is undocumented. [1] [2] [4]
• Care guidance disagrees with itself: the manual’s feature list says dishwasher, microwave and freezer safe, while the product page and the manual’s own care note say hand-wash the outer shell. The shell is ABS, so the distinction matters. [1] [2]

Sources (4)

1. Bentgo Kids Lunch Box product page
2. Bentgo Kids user manual (PDF) — where the resins are named
3. Bentgo warranty and returns
4. Bentgo FAQs

• The resin is findable only on the spare-parts listing for a replacement container. The main kids’ product page names no material at all, so a shopper must navigate to a spare part to learn what their child’s lunch box is. [1] [2]
• “BPA-free*” carries an asterisk expanding to “in accordance with regulations” — an assertion of regulatory compliance rather than of absence, and a materially weaker claim than the unqualified version most competitors use. [2]
• Care instructions live in a blog post rather than on the product page, and they are stricter than the spare-part page implies: hand-wash the graphic lids, and microwave for a maximum of 3 minutes at 500 W. [3] [4]
• Because of the origin contradiction we are recording country of manufacture as UNVERIFIED rather than repeating either claim. [1] [3]

Sources (4)

1. monbento MB Tresor kids bento product page
2. monbento MB Container MB Tresor spare part — where PP is named
3. monbento Made in France page — which omits MB Tresor
4. monbento maintenance guide — the stricter care instructions

• Silicone seal wear is excluded from the warranty by name. The seal is the part that makes the box leakproof and the first part to fail, so the headline feature is effectively uncovered. [2]
• The “free of” list changes between models on the same site: lead-free is asserted for the Tapas and not for the Original, with no explanation of why. [1] [3]
• Across four Yumbox pages the material language never gets more specific than “BPA-free, phthalate-free”. The steel grade for a different model — 18/8 for the Prêt — is named, so the omission here is a choice. [1] [4]
• Credit: Yumbox publishes an actual dishwasher test specification, “65C/149F, 110 min. cycle”. That is genuinely more informative than “dishwasher safe”, and nobody else does it. [4]

Sources (4)

1. Yumbox Original Leakproof Bento product page
2. Yumbox warranty — the freezer and seal exclusions
3. Yumbox Tapas — where the lead-free claim appears instead
4. Yumbox FAQ — the dishwasher test spec and the 18/8 Prêt reference

• No thermal headroom at all for a children’s product: not microwave safe, not freezer safe, dishwasher capped at 65°C — while other Mepal lines on the same site are microwave-rated to 700W. You cannot reheat in it and you cannot freeze ahead. [1] [4]
• “All products 100% BPA free” is a blanket site-wide banner with no per-product substantiation, no BPS statement and no phthalate statement. [1]
• No warranty is published on the US product pages, the US category page or the FAQ index. [4] [5]
• No USD price is rendered anywhere in the HTML of the US product or category pages. Made in the Netherlands, which is stated plainly. [1] [4]

Sources (5)

1. Mepal Campus bento lunchbox, blue
2. Mepal Campus, licensed variant — same spec
3. Mepal Campus, pink — confirms PP/ABS and 65°C across variants
4. Mepal US lunch boxes category — no prices, no warranty
5. Mepal FAQ index

• The fork, the spoon and the 2oz dressing container are all food-contact items and none has a stated material. [1]
• “BPA-free” says nothing about BPS, BPF, phthalates or the base polymer. It is the narrowest available claim and it is doing all the work here. [1]
• “Reliable, sturdy, and stain-resistant” are the adjectives. None of them is a material. [1]
• No third-party testing or certification cited. No country of manufacture. No warranty. [1]

Sources (1)

1. Walmart — Mainstays Kids 4-Compartment Plastic Bento Box

• CPSC recall 12-089, January 2012: California Innovations recalled about 248,000 insulated lunch box sets because “gel that contains diethylene glycol and ethylene glycol can leak out of damaged freezer gel packs, posing a poisoning hazard if ingested”. One dog died; the recall was later expanded. Different manufacturer — but it establishes freezer-gel chemistry in lunch bags as a real recall category, and PackIt’s is unstated. [3] [4]
• “Nontoxic poly canvas” is a claim without a material. “Nontoxic” is not a regulated term for textiles, and “poly canvas” does not identify the polymer — it could be polyester or polypropylene. [1]
• A five-substance “free of” list sits on top of an unidentified base material, which is the wrong way round. [1]
• A 90-day warranty on a $22.99 product whose failure mode is the gel wall splitting — the part that is both unnamed and the reason to own it. [1]

Sources (4)

1. PackIt Freezable Lunch Box product page
2. PackIt “Our Technology” — gel composition not disclosed
3. CPSC recall 12-089 — California Innovations freezer gel packs, January 2012
4. CPSC — California Innovations expands the gel pack recall

• Microwave-safe for an unnamed resin. A three-minute reheat limit is given without saying what is being heated, and microwave behaviour differs substantially between resins. [1]
• The warranty’s published exclusions are written for drinkware, not for this product: “drinkware that has lost its insulating properties” is irrelevant to an uninsulated plastic bento. It is boilerplate reused across a catalogue, and a buyer cannot tell what is actually covered. [1] [2]
• A lifetime warranty on a $29.99 plastic box is generous on paper; the full policy document was not reachable from the product page. [1] [2]
• Country of manufacture is not published. [1]

Sources (2)

1. Simple Modern Porter Bento Box product page
2. Simple Modern kids lunch collection

• The composition and the tempering explanation are on Anchor Hocking’s “why choose glass” page, not the TrueSeal product page. Both linked below. [2]
• Lid resin and gasket material are not stated. The lid is a food-contact part, which is why the composition is not counted as fully declared. [1]
• On testing, their FAQ answers the lead-and-cadmium question with “Yes, and also CA Prop 65 compliant.” That is the whole answer. It names an external standard, so it scores 1 — but there is no laboratory, no method and no report behind it. No warranty is published either. [4]
• 425°F ceiling — above that counts as misuse. [1]
• Their framing that soda-lime is “a modern improvement over borosilicate” is a competitive claim, not a neutral one. Their own precise wording is that tempered soda-lime has “equal to or greater thermal shock resistance than annealed borosilicate” — a tempered-versus-annealed comparison, which is not the same as tempered-versus-tempered. [2] [3]

Sources (4)

1. Anchor Hocking TrueSeal
2. Anchor Hocking, “why choose glass” — the published oxide composition
3. Anchor Hocking bakeware facts
4. Anchor Hocking FAQ — the lead, cadmium and Prop 65 answer

• “No lead added during fabrication” is carefully worded. It addresses the process, not the finished product, and no test result is offered alongside it. [1]
• Made in France, stated plainly, and manufactured “to French and European food-safety standards”. [1]
• The dishwasher, freezer and microwave guidance lives inside product images rather than in page text, which makes it easy to miss. [1]
• No oven guidance, no temperature limit and no thermal-shock warning — on soda-lime glass, which tolerates thermal shock poorly. Compare WECK below, which publishes a differential. [2]

Sources (2)

1. Le Parfait Super Jar product page
2. Le Parfait America — airtight jars with replaceable seals

• Three different oven numbers appear on one of U-Konserve’s own pages: these containers are “oven safe up to 300ºF”, the BounceBox is “oven safe up to 425ºF”, and discolouration is said to start above 450°F with a do-not-exceed of 600°F. [2]
• 300°F is a strikingly low rating for 304 steel and is almost certainly a limit imposed by the silicone lid or the assembly, not by the metal. The page does not say so. [2]
• “Naturally free from BPA, BPS, lead, and other toxins” is open-ended; the product page’s narrower “No BPA, BPS, phthalates, or lead” is the defensible version of the same claim. [1] [2]
• No warranty published anywhere we could find. Manufacture is stated as China, in BSCI-certified facilities. [1] [2]

Sources (2)

1. U-Konserve Rectangle Container product page
2. U-Konserve Product Information — steel grade and the three oven figures

• “FDA approved silicone” appears on their site but attached to a different product line, not this container. [1]
• The lid is not dishwasher or oven safe, which undercuts the point of a steel container somewhat. [1]
• No warranty published. [1]
• Their site redirects to an unencrypted connection, which is a poor look for a 2026 storefront. [1]

Sources (1)

1. Onyx 18cm airtight container

• “BPA Free” on a steel and silicone insulated canister — never in question, and the claim does no work. [1]
• No silicone standard for the cap gasket, and the lid’s plastic parts are not itemised, so the food-contact polymer inventory is incomplete. [1] [3]
• No microwave, oven or freezer guidance published at all for this product — a gap made conspicuous by Klean Kanteen’s own Rise Food Box, which carries explicit 350°F and 1000W limits. [1]
• For context on why the vacuum seal matters: the CPSC recalled several brands of children’s stainless drinkware in 2023 over lead in the solder sealing the base. [4]

Sources (4)

1. Klean Kanteen 16 oz TKCanister insulated food container
2. Klean Kanteen FAQ — 18/8 definition and the silica/glass vacuum plugs
3. Klean Kanteen warranty
4. CPSC — Green Sprouts recall over lead in the base solder, 2023

• Libbey’s own dedicated storage line does not do this. The “Serve It” 8-piece glass storage set and the small bowls with lids declare only “glass”. Same maker, same shop, one page declares and the others do not. [2] [3] [4]
• Declared oven safe with no temperature ceiling and no thermal-shock figure, on soda-lime glass — whose weak point is precisely thermal shock. The Serve It page adds “do not transfer containers directly from freezer to oven”; this page omits that caution entirely, so two Libbey pages give different safety information about the same glass. [1] [3]
• No product warranty at all — only a 30-day window to report a problem with an order, which is a retail term rather than a guarantee. [5]
• The lid resin is never named, and the URL slug reads “storage-basics” while the title reads “Baker’s Basics”. Merchandised as storage, titled as bakeware. [1]

Sources (5)

1. Libbey Baker's Basics 4-piece glass bowl set with lids
2. Libbey storage collection
3. Libbey Serve It glass storage set — glass type absent, freezer-to-oven caution present
4. Libbey small glass bowls with lids — glass type absent
5. Libbey returns and replacements — the 30-day window

• The product page drops the word “platinum” and says only “premium food-grade silicone”. The material distinction survives only on the FAQ. [1] [2]
• “Food-grade… one of the highest quality tiers” is marketing. There is no tiered food-grade silicone rating scheme, and no agency issues a food-grade certificate. [2]
• The two pages word the same claim differently — “and phthalates” against “or other phthalates”. The second phrasing implies BPA and BPS are phthalates, which they are not. [1] [2]
• Credit: a 425°F oven rating with an explicit exclusion for broilers, open flames and sharp objects is more specific than anything else in this category. [1]

Sources (2)

1. Stasher Gallon Bag product page
2. Stasher materials and FAQ page — the platinum cure

• Natural rubber rings are the only sealing part, they are consumable and sold separately, and natural rubber is a latex-allergy consideration the pages never raise. [1]
• Freezer safety is conditional on buying a separate plastic Keep Fresh Cover, and only for three of the jar shapes. Wood lids are refrigerator-only; cork is neither. [1]
• No “free of” claim of any kind. On a jar with no coating and no plastic in the food zone that is defensible restraint — but the glass type still goes undeclared. [1]
• Company origin is given as Oflingen, Germany. The current country of manufacture for the jars is not stated as such. [2]

Sources (2)

1. WECK FAQ — the 122°F differential, rubber rings, freezer conditions
2. WECK About page

• “Heat resistant glass” is a performance adjective standing in for a composition. It is declared oven-safe with no temperature ceiling and no thermal-shock warning. [1]
• No “free of” claims at all, and no product warranty — only a 365-day returns policy, which is a retail term rather than a guarantee about the product. [1]
• Credit: the lid and seal disclosure is more specific than Rubbermaid’s, whose lid is given only as the trade name “StainShield”. [2]

Sources (2)

1. IKEA 365+ food container with lid, rectangular glass 34 oz
2. IKEA 365+ food storage range

• Glasslock sells both a standard line and this “Oven Safe” line, and the site never explains the material difference between them. A buyer cannot tell what the premium buys. [1] [2]
• No warranty, no oven instructions and no thermal-shock guidance on the product page, the category page or the brand page. [1] [2]
• “Do not contain harmful environmental hormones” is a claim well beyond BPA, offered with no testing, no standard and no reporting limit. [2]
• Credit: country of manufacture is stated plainly — “all of our Glasslock products are made and assembled in S. Korea”. [2]

Sources (2)

1. Glasslock 18pc Oven Safe Box Set
2. Glasslock — “What is Glasslock?” brand page, with the glass recipe

• The warranty covers breakage “from oven heat” for two years. Thermal-shock breakage from a cold counter — which Pyrex’s own safety page warns about at length — is not what the warranty promises to replace. [2]
• A 450°F figure exists on the safety page but is scoped to “bakeware”, leaving this storage vessel’s limit undeclared. [2]
• Credit: the safety page is unusually thorough on thermal shock — do not add liquid to hot glassware, do not put hot glass on a countertop, a metal surface or in the sink. [2]
• Pyrex states it tests for lead and cadmium at third-party laboratories. No laboratory is named and no certificate is published. [3]

Sources (3)

1. Snapware Total Solution Pyrex 10-piece set
2. Pyrex product warranties, safety and usage
3. Pyrex FAQ — “we produce both soda-lime and borosilicate glass”

• The FAQ mis-converts a temperature difference as if it were an absolute temperature: “resistant to thermal shocks ΔT from 100°C / 212°F to 160°C / 320°F”. A ΔT of 100°C is 180°F, not 212°F. The published shock ratings overstate in Fahrenheit. [2]
• Two of their own pages disagree on origin: the product page says “all components are made in Italy”, while the FAQ says “most of our glassware is made at our factory in Fidenza and Parma… some of our items are manufactured for us by skilled artisans in glassworks in Spain, Germany, Turkey and China”. [1] [2]
• Credit: the FAQ makes a broad and specific material claim — “all of our glass products past and present are lead, cadmium, BPA, arsenic and heavy metal free”. [2]
• No warranty published. [1]

Sources (2)

1. Bormioli Rocco Frigoverre 4.7-cup rectangle, set of 8
2. Bormioli Rocco FAQ — material claims, the ΔT conversion, the origin list

• That steel rim is a real hazard disclosed only in the warranty clause: microwaving voids the warranty if the rim is exposed. A buyer reading the product page alone would not see it. [1] [2]
• Oven safe to 415°F — but not the lids. A two-part limit that is easy to get wrong. [1] [2]
• A mixed-material set under one SKU: silicone, stoneware, plastic lids and steel, made in two countries. The stoneware is made in the USA; the silicone in China. [2]
• Credit: the plastic lids are declared “free of BPA, lead, PVC, and phthalates” separately from the silicone claims, rather than blanketing everything under one sentence. [1]

Sources (2)

1. Souper Cubes Complete 29-piece set
2. Souper Cubes FAQ — cure type, FDA vs LFGB, the steel rim, warranty

• Two Ball product pages disagree: the Wide Mouth page states “Freezer Safe: Yes” and the Regular Mouth quart page states “Freezer Safe: No”, with no explanation. The real reason is the shouldered neck on regular-mouth jars, and Ball never says it. [1] [2]
• “BPA-free” is the only chemical claim, and the lid’s sealing compound — the part that actually touches food, and where BPA historically lived — is never identified. [1] [3]
• Lids are single-use for canning and bands are reusable. Stated clearly, which matters for a consumable part. [3]
• No warranty published anywhere we could find. [1]

Sources (3)

1. Ball Mason Jars & Lids, Wide Mouth 12-pack
2. Ball Mason Jars & Lids, Regular Mouth — the contradicting freezer line
3. Ball wide mouth jar lids and bands, 12pk

• The only caution offered is “do not place container on wet or cold surface” — an implicit admission that thermal shock is the real failure mode, while declining to quantify it. [1]
• A “Limited Lifetime Warranty” on “defects in materials or workmanship”, for a glass container, with no stated position on breakage — the one failure a glass-container buyer actually cares about. [1]
• “BPA Free” is the only chemical claim. No lead or cadmium statement, where Duralex, Libbey and Bormioli all make one; no lid resin, no silicone standard, no country of manufacture. [1] [2]
• Ello’s FAQ page would not load for us, so glass type, lid resin and origin stay unverified from the maker rather than being filled from a retailer. [3]

Sources (3)

1. Ello Duraglass 5 Cup Food Storage Container
2. Ello Duraglass 2 Cup Round — same undeclared glass across the line
3. Ello FAQ — would not load

• One brand name, two different materials: “Brilliance” covers both this glass line and a Tritan plastic line, so listings and reviews routinely mix them up. [1] [2]
• Rubbermaid’s own help-centre articles on Brilliance materials and care would not render for us, so the material detail is effectively unreachable on their site. [2]
• The limited warranty and satisfaction guarantee are referenced by link only; no terms appear on the product page. [1]

Sources (2)

1. Rubbermaid Brilliance Glass Food Storage Container Set
2. Rubbermaid Brilliance category page — Tritan and glass lines under one name

• Credit where it is due: Duralex is the only maker in this category publishing both an operating range — “−4°F to 266°F” — and a delta-T shock limit at all. Getting the arithmetic wrong is a smaller failing than not publishing a number. [3]
• The glass is described only as “tempered”. Tempered soda-lime and borosilicate behave very differently under thermal shock and break differently, and Duralex never says which it is even while quantifying shock limits. [1] [3]
• The lid polymer is never named — and the lid is the part sealing against food in the fridge. [1]
• Listed “Final Sale”, non-returnable and non-refundable, with no published warranty. Made in France at their own factory in La Chapelle-Saint-Mesmin, which is stated plainly. [1]

Sources (3)

1. Duralex Freshbox square bowl with lid
2. Duralex Freshbox round bowl with lid — lid material also absent
3. Duralex — benefits of Duralex glassware, where all three figures appear together

• The summary bullet says the containers are “microwave, oven, refrigerator, freezer & dishwasher safe” without qualification. The detail then says “top-rack” dishwasher and “Preheated Oven Safe Up to 450°F”. Two meaningful restrictions dropped from the headline. [1]
• No gasket or seal material is given, despite the “Airtight, leak-proof” claim, which implies one. [1]
• Country of manufacture not published. No warranty. No third-party testing. [1]
• Brand naming is muddled on the page itself: the title says “Snapware Pyrex” and the spec table says “Brand: Pyrex”. Pyrex Europe is borosilicate and Pyrex US is tempered soda-lime — two glasses, one name. [1]

Sources (1)

1. Costco — Snapware Pyrex 18-Piece Glass Food Storage Set

• They do assert testing, and we had this at zero before we looked properly. The FAQ says they “routinely test our Pyrex products for harmful lead and cadmium content at internationally recognized, third-party laboratories”. No laboratory is named, no result is published and no frequency is given, so it scores 1 — but it is an explicit third-party testing claim and we were wrong to record nothing. [2]
• This matters practically, not just on principle: soda-lime handles thermal shock worse than borosilicate, which is exactly why Pyrex warns never to put hot glass on a cold or wet surface. The composition is the reason for the warning. [2]
• No stovetop, broiler, toaster oven or grill. Fully preheated conventional or convection oven only. [1]
• January 2023: the FTC announced a proposed consent order requiring Pyrex’s manufacturer, Instant Brands, to pay $129,416 for advertising Chinese-made measuring cups as “Made in USA”. Over 110,000 units were sold with that claim; the order was finalised in March 2023 and refunds went out in October 2024. [4]
• Instant Brands filed for Chapter 11 in mid-2023, so treat any warranty as worth checking before you rely on it.

Sources (4)

1. Pyrex Simply Store 4-piece round set
2. Pyrex FAQ — discusses both glass types without stating which is used
3. Corning Museum of Glass on Pyrex glass composition
4. FTC press release, Instant Brands “Made in USA” order, January 2023

• Two Caraway pages describe the same material two different ways — “ceramic-coated glass” and “ultra-pure, high-resistance glass”. Neither is a glass type; “ultra-pure” and “high-resistance” are not glass classifications. [1] [2]
• The airtight line claims to be free of “microplastics” on a container with a plastic lid and a silicone gasket. As stated, that claim is not measurable. [2]
• In August 2025 the NAD found Caraway’s “Free of PFAS” and “non-toxic” claims supported, while recommending it discontinue comparative claims including “Non-Toxic Swaps. Ditch the toxins and cook cleaner with Caraway!” and claims about rising “Teflon flu” cases. Credit the first half as readily as the second. [4]
• Caraway publishes heavy-metal testing — “20+ heavy metals tested, including lead and cadmium — all clear” — which is more than any other storage brand here offers. [3]

Sources (4)

1. Caraway Food Storage Set
2. Caraway Glass Airtight Container Set — the second description of the glass
3. Caraway — No Forever Chemicals
4. BBB National Programs — NAD decision on Caraway, August 2025

• The lifetime warranty openly excludes gaskets, accessories and jars — the gasket being the part that wears out. Honest, and worth knowing before you buy. [1]
• Fully US-made and specific about it: “Erie, PA USA. Our Mason jar lids are made start to finish from design, manufacture and fulfillment”. [1]
• It is a lid rather than a container. Scored here because it determines what a mason jar actually is in use, and because the disclosure contrast with OXO on this page is instructive. [1]

Sources (1)

1. reCAP Mason Jars FAQ — resin, gasket, warranty and use limits

• No resin identification code appears anywhere on Rubbermaid’s pages, and their help-centre articles on Brilliance materials would not render for us. [1] [2]
• The one-year limited warranty sits behind a linked PDF. The only term actually written into the page is a 120-day satisfaction guarantee, limited to original US purchasers from authorised sellers. [1]
• No Prop 65 or California disclosure appears on the page. [1]

Sources (2)

1. Rubbermaid Brilliance 10-Piece Set
2. Rubbermaid Brilliance category page

• No resin code, no polypropylene, nothing. “BPA-free” is a negative claim standing in for a positive identification, and it says nothing about BPS, BPF or phthalates. [1]
• The integrated spoon and fork are food-contact items with no stated material. [1]
• “Microwave and freezer” safe and “top-rack dishwasher safe” are claimed for an unnamed polymer. Microwave behaviour is entirely polymer-dependent. [1]
• “Translucent lid” — material not published. No country of manufacture. No warranty. [1]

Sources (1)

1. Walmart — Mainstays Food Storage Container Rectangle 42oz

• We are deliberately not filling this gap from a distributor listing. Material facts on this site come from the maker, and OXO publishes none, so it stays UNVERIFIED. [1]
• Only dishwasher guidance is given. There is no statement about whether these are microwave or freezer safe. [1]
• Several OXO product URLs returned 404 for us and the “Better Guarantee” page would not render its terms. OXO’s site was the least readable of any manufacturer in this category. [1] [2]

Sources (2)

1. OXO POP Container Big Square Short 2.8 qt
2. OXO POP container range

• The warranty covers only the stainless steel components. The silicone is the wear part and the part actually in the child’s mouth, and it is excluded. [1]
• No country of manufacture anywhere on the site — unusual for a brand whose entire pitch is material transparency, and the single thing keeping this off a perfect score in our notes. [1] [3]
• “Why Pura?” says “food service grade stainless steel” without a number; only the product pages say 18/8. The grade is asserted, never sourced or certified. [1] [3]
• No PFAS statement at all — which on steel and silicone is defensible, and which we note because every competitor makes one. [1]

Sources (3)

1. Pura Sport Mini 11 oz with sleeve
2. Pura Kiki 11 oz Sippy — same materials, cold drinks only
3. Why Pura? — MADE SAFE certification and the grade wording

• The steel grade is on the Manufacturing FAQ, not the product page. A buyer reading only the listing gets “18/8”; the 304 equivalence and the lead-solder disclosure are two clicks away. [1] [2]
• Names its compliance regimes specifically — “accredited third-party labs”, US FDA, California Prop 65, EU REACH and SVHC. No certificate is published, so this is an assertion with named standards rather than evidence. [2]
• A page titled “Manufacturing FAQ” that does not name a country of manufacture. The omission is conspicuous given the page’s title. [2]
• The straw cap for this bottle carries a warning against hot drinks, and its polymer is not named. The Magslider lids sold separately are named — polypropylene #5 and Eastman Tritan. [1] [3]

Sources (3)

1. YETI Rambler 26 oz Color Cap Straw Bottle
2. YETI Manufacturing FAQ — 304/18-8, the lead detection limit and the solder admission
3. YETI Rambler FAQ — BPA claim, dishwasher and heat guidance

• The 18/8 grade and the country are stated in the company FAQ, not on the product page, which says only “90% Recycled Steel”. Both linked below. [2]
• Testing scores only 1 of 3, and it is worth being precise about why, because it is easy to read their page as more than it is. Intertek appears twice — as a recycled-content verifier and behind a sustainability certification. Neither is safety testing of this bottle. GreenScreen is not a certification they hold: it is a hazard-scoring method they say they used internally while formulating the Klean Coat exterior powder coat. The bottle itself has no published test report. [2]
• Klean Kanteen says all its products are lead-free and that its insulated line uses silica/glass plugs rather than lead solder. Independent tester Tamara Rubin disputes this for the insulated bottles and recommends only the non-insulated ones. We found no company response to her specifically. This single-wall bottle sidesteps the argument entirely by having no vacuum seal at all. [3]
• Hand wash the printed ones if you want the graphics to survive. [1]

Sources (3)

1. Klean Kanteen 12oz Kids Classic with Sport Cap
2. Klean Kanteen FAQ — steel grade, lining, country, sealing method
3. Tamara Rubin, water bottle recommendations and the insulated-bottle dispute

• “BPA-free stainless steel” is a claim about the wrong material. BPA is a polycarbonate monomer; steel never contained it. The claim is attached to the steel rather than to the lid, which is the part where the question is real. [1]
• The lead claim is the vaguest form used by any brand here: products “do not pose a risk of lead exposure”. That is a risk conclusion, not a composition statement, and no lab, limit or vacuum-seal disclosure accompanies it. [2]
• The product page markets 12-hour cold retention; the downloadable care guide escalates to a capitalised “NOT FOR USE WITH HOT LIQUIDS: For cold liquids only”, while the FAQ separately explains how to preheat Thermos products. Three documents, three impressions. [1] [2] [3]
• Country of manufacture is stated plainly as China. Only three brands in this category do that. [1]

Sources (3)

1. Thermos FUNtainer 12 oz Water Bottle
2. Thermos FAQ — the PP#5 / 18-8 / silicone / LDPE breakdown and “no interior coating”
3. Thermos FUNtainer Care & Use Guide (PDF)

• “Lead safe”, not “lead free” — a deliberately weaker word, on the one bottle here with no vacuum seal and therefore no solder, where the stronger claim would have been easiest to make. No laboratory is named. [1]
• The 90-day manufacturer warranty is the shortest of any bottle on this page, and the separate 30-day breakage replacement is capped at one bottle per customer, ever. [2]
• Freezing the glass voids the warranty, and that appears only in the FAQ — not on any product listing. Soda-lime tolerates thermal shock poorly, so the rule follows from the material, which is exactly why naming the material matters. [1] [2]
• Manufacture is stated as PRC with design in San Francisco. Stated plainly rather than implied. [1]

Sources (2)

1. bkr FAQ — soda-lime vs borosilicate, cap and gasket materials, lead-safe wording
2. bkr warranty and breakage policy

• The FAQ is where the consequence lives, in capitals: “DO NOT PUT OUR GLASS HYDRATION BOTTLES IN THE FREEZER OR BOILING WATER”. Soda-lime is not thermal-shock resistant and their baby bottles, which are borosilicate, are. Same brand, two glasses, one of them explained only if you go looking. [2]
• “BPA-free” is the headline claim on a glass bottle. It can only be about the polypropylene cap; on the body it was never a question. [1]
• The headline feature gets the shortest warranty: one year on glass bottles against five on their steel vacuumware, and breakage is not addressed either way. [3]
• Glass made in France, cap and sleeve made in the US, assembled in the US — component-level origin, which nobody else here publishes. [2]

Sources (3)

1. Lifefactory 22 oz glass bottle with classic cap
2. Lifefactory FAQ — soda-lime vs borosilicate, origin, the freezer and boiling-water ban
3. Lifefactory warranty terms

• “Hardshell™ powder coating” is described as “durable nontoxic” — a trade name plus an adjective, with no chemistry. Powder coats are commonly polyester or epoxy-polyester; MiiR never says which, and “nontoxic” is unverifiable as written. [2]
• “BPA-free construction” is claimed for the whole bottle, but the body is steel. The claim can only apply to the PP lid, and the framing implies more than it delivers. [1]
• The gasket is undisclosed across every MiiR product page we read, despite being a direct food-contact part. [1] [2]
• Country and supplier detail are unusually specific: manufactured in China, in Wuyi, Yongkang and Shenzhen, with MiiR’s own office in Jinhua and required SMETA audits. [3]

Sources (3)

1. MiiR Wide Mouth Bottle
2. MiiR — what are MiiR products made of?
3. MiiR — where are MiiR products made?

• The lifetime warranty explicitly excludes “lids, seals and straws” — the parts most likely to fail, on a product whose selling point is the lid. The same company then offers the lifetime warranty specifically if the base cap comes off, which is the failure that would expose the lead pellet. [2] [3]
• CPSC recall 25-063, December 2024: 2.6 million Switchback and Trigger Action travel mugs, because “the mug’s lid threads can shrink when exposed to heat and torque”. 38 burn injuries globally, 11 needing medical attention. The Quencher was not in that recall — but it is the same maker and the same lid-thread engineering. [4]
• Consolidated false-advertising class actions over the undisclosed lead were dismissed in Stanley’s favour on 3 April 2026, with leave to amend. The judge held that “the mere presence of lead could not be material to a reasonable consumer” absent a demonstrated risk. [5]
• The product page says flatly “dishwasher safe”; the FAQ qualifies it to top rack only, away from the hottest water. The recalled mugs failed on heat plus torque at the lid threads. [1] [2]

Sources (5)

1. Stanley Quencher H2.0 FlowState 40 oz
2. Stanley FAQ — 18/8 stated as grade 304
3. Stanley support article — “Do Stanley products contain lead?”
4. CPSC recall 25-063, Stanley travel mugs, December 2024
5. Bloomberg Law — Stanley defeats false-ad suits over lead, April 2026

• No steel grade published anywhere. Every other named-steel brand on this page states 18/8 or 304; Owala’s FAQ says only “triple-layer insulated stainless steel”. [2]
• Credit where it is due: Owala names its plastic supplier and resin by brand — Eastman Tritan — and states it is phthalate-free. Most competitors say “BPA-free plastic” and stop. [1]
• Compare the lead claim with YETI’s, which publishes a detection limit of 0.002 mg/kg and concedes solder. Owala’s is the stronger sentence and the weaker file. [3]
• No country of manufacture anywhere on the site — a real gap, given the lead-free claim rests entirely on Owala’s own control of its supply chain. [1] [2] [3]

Sources (3)

1. Owala FreeSip product page
2. Owala FAQ — Tritan, care and warranty exclusions
3. Owala — “Lead free stainless steel water bottles”

• The warranty covers broken lids — the opposite of Stanley, which excludes lids, seals and straws by name. That is real, checkable disclosure credit. [1]
• The steel grade appears on Simple Modern’s Classic Tumbler pages as 18/8, and not on this bottle’s own page. Same brand, two product lines, two levels of disclosure. [1] [2]
• The collection page carries a “Dishwasher Safe” badge; the product page says the bottle is hand-wash only and only the straw lid is dishwasher safe. [1] [3]
• Testing is asserted through “independent, properly accredited testing labs” with no laboratory named and no report published. [2]

Sources (3)

1. Simple Modern Summit 32 oz with straw lid
2. Simple Modern Classic Tumbler — where 18/8 is stated
3. Simple Modern Summit collection page — the dishwasher badge

• “Screw-top lid” with a “chug spout” and a “soft rubberized grip pad”. Three polymer components, three blanks. [1]
• The page does not state whether the steel interior has any liner or coating. On insulated bottles at this price that is worth asking. [1]
• “BPA-free” is the only chemical claim, and it is not attached to any named polymer, so it cannot be checked for BPS or BPF substitution. [1]
• “Safely designed for top-rack dishwasher cleaning”. No warranty, no country of manufacture, no testing — consistent across all 21 Walmart house-brand products we checked. [1]

Sources (1)

1. Walmart — Ozark Trail 40 fl oz Insulated Stainless Steel Water Bottle

• “Spill-proof lid” and the straw are both unnamed plastics in direct mouth and liquid contact. [1]
• “Powder-coated, sweat-free exterior” — composition not published. [1]
• “Keeps cold 34 hours or hot for up to 6 hours” with no test method cited. [1]
• “BPA-free water bottle” is the chemical claim, made without naming any resin. [1]

Sources (1)

1. Walmart — Ozark Trail 32 fl oz Insulated Flip-Straw Water Bottle

• Two years is by far the shortest warranty of any premium bottle here, on the most expensive-per-ounce product on the page, and it requires photographic evidence to claim. [2]
• Not dishwasher safe, and a published ceiling of 185°F / 85°C — the only numeric beverage temperature limit any bottle brand here publishes. Credit the specificity; the silicon dioxide lining is what imposes it. [1] [2]
• The tops are “BPA-free plastic” and the gasket is not named at all, on the parts you drink through. [1] [2]
• No country of manufacture on the product page or the FAQ. [1] [2]

Sources (2)

1. Purist Mover 18 oz product page
2. Purist FAQ — amorphous silicon dioxide, lead-free incl. vacuum seal, warranty terms

• The page’s own metadata references “NSF/ANSI certified” while the body of the page certifies only to WQA and names no NSF/ANSI standard number. Two elements of one page disagree about the certification. [1] [2]
• Explicitly not dishwasher safe — “Never use abrasive detergents or a dishwasher” — on a $39.99 bottle in a category where dishwasher safety is standard. [1]
• Steel grade, country of manufacture and warranty are all absent from the manufacturer’s pages. [1] [2]
• If microplastics are the reason you are buying this, read what NSF 401 actually certifies first — this bottle is not certified to it. [2]

Sources (2)

1. Brita Premium Filtering Water Bottle, stainless steel 32 oz
2. Brita — second URL for the same product, carrying the WQA wording

• The AB 1200 disclosure is the manufacturer’s own filing against a designated chemical list, not third-party testing, which is why it counts as a declaration rather than a test. It is also not component-level — every product in a category gets an identical entry. [2]
• Hydro Flask says it moved away from the industry-standard leaded sealing dot in 2012. Tamara Rubin’s XRF testing describes pre-2018 Hydro Flasks as having leaded dots, while naming post-2018 Hydro Flask as consistently lead-free. Both accounts cannot be exactly right, and we found no reconciliation — but on the current product they agree. [3] [4]
• Stainless grade, cap plastic, boot material and country of manufacture are all unstated. [1]
• Not for hot liquids, not for the freezer, ages 3+. [1]

Sources (4)

1. Hydro Flask Kids 12 oz Bottle
2. Hydro Flask required materials disclosure (California AB 1200)
3. Hydro Flask FAQ on lead and bottle sealing
4. Tamara Rubin, water bottle testing and recommendations

• No lead claim of any kind. Reasonable on an unvacuumed glass bottle with no solder — but every other brand here makes one, so its absence is a data point rather than a neutral. [1]
• Credit: “Not designed for use with hot or carbonated beverages” sits on the product page itself rather than in a care PDF. Given the glass type is undeclared, that is the right place for it. [1]
• The limited lifetime warranty is restricted to original purchasers in the US and Canada, and its full terms are referenced rather than published. [1]

Sources (1)

1. Ello Syndicate 20 oz Glass Water Bottle

• Its own siblings at the same price say “18/8”. This one says only “stainless steel”. The grade disclosure is inconsistent within one range at one retailer. [1] [2]
• The screw-top lid “doubles as a portable drinking cup”, so it is explicitly a drinking vessel, and its material is not published. [1]
• “Silver” exterior finish — type not published. [1]
• No dishwasher guidance, no warranty, no country of manufacture, no testing. [1]

Sources (2)

1. Walmart — Ozark Trail 1.1-Liter Insulated Stainless Steel Bottle
2. Walmart — Ozark Trail 40 fl oz, which does state 18/8

• “Leakproof when slider is locked” implies a gasket. Its material is not published. [1]
• “BPA Free” is claimed without naming the resin, so it cannot be checked for BPS or BPF substitution. [1]
• The bullets say “Dishwasher-Safe Lid and Hand-Washable Cup”; the spec field flatly says “Cleaning: Hand Wash”. A shopper reading only the spec table would hand-wash a dishwasher-safe lid. [1]
• Made in China, stated. No warranty published. Costco’s bottle listings name the body as stainless and say nothing about the spout, lid or gasket — the Contigo Autoseal 2-pack on the same site makes no BPA claim at all despite a plastic lid. [2]

Sources (2)

1. Costco — Owala SmoothSip Slider 20oz 2-Pack
2. Costco — Contigo Autoseal Couture 20oz 2-Pack