Corkcicle · Insulated Travel Drinkware
Corkcicle 16 oz Matte Black Canteen
Lower concern. Stainless steel canteen unlikely to contain PFAS.
Corkcicle canteen is primarily stainless steel with a matte finish coating. No disclosed PFAS content or claims, no independent testing found. Stainless steel vessels carry minimal PFAS risk versus coated cookware or treated textiles.
Shop Corkcicle on Amazon →Material
stainless steel with matte powder coat
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
This canteen is constructed from food-grade stainless steel (typically 18/8) with a matte powder-coat finish applied to the exterior. The stainless steel core resists corrosion and does not leach metals into beverages under normal use. The powder coat is a dry, baked polymer finish not typically formulated with Teflon-type coating or heavy metals in the cookware/drinkware class, though the exact resin composition is not publicly disclosed by Corkcicle.
The brand's record and disclosure
Corkcicle does not publish detailed material safety data sheets or third-party testing certifications (e.g., NSF, FDA compliance statements) on their website. The brand has not faced documented safety recalls or public complaints tied to the canteen leaching or coating degradation. No formal PFAS commitment or testing transparency has been announced, but absence of evidence of a problem is not the same as a guarantee.
How it compares in its category
Stainless steel canteens are among the lowest-risk drinkware options compared to ceramic-glazed or plastic-lined alternatives. The matte powder coat is a cosmetic finish that does not contact contents directly, reducing contact hazard versus interior coatings. Other reputable brands in this space (Hydro Flask, S'well) similarly do not disclose powder-coat formulations, making Corkcicle's transparency consistent with category norms.
If you buy it
Hand wash rather than dishwasher to extend the powder coat's integrity and minimize any thermal stress on the finish. Do not fill with boiling water immediately after purchase; allow the product to reach room temperature first. Inspect the exterior annually for chips or peeling; if the coating compromises, replacement is prudent to prevent any microscopic resin particles entering liquids. Avoid abrasive scrubbing or acidic liquids sitting in contact for extended periods, as these can degrade the finish over years of use.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Powder-coat composition (unspecified resins)
The exterior matte finish is not disclosed to contain BPA, phthalates, or heavy metals, and no recalls or complaints are on record. However, full formulation transparency is absent; the risk is theoretical and low given the non-contact application.
Stainless steel leaching (nickel, chromium)
Food-grade 18/8 stainless steel is designed to resist corrosion and does not leach metals into neutral beverages under standard use. Risk is negligible unless the canteen is damaged or exposed to prolonged contact with very acidic or salty liquids.
Coating degradation over time
Powder coatings can chip or peel with heavy use, drops, or aggressive cleaning. Once the coating is compromised, small fragments could theoretically enter beverages. This is a mechanical failure risk, not a chemical toxicity issue, and is managed by inspection and replacement.
Off-gassing or odor from new finish
New powder-coated products may emit slight chemical odors for the first few uses as the cured resin stabilizes. This is temporary and not documented as harmful, but some users report a faint smell that dissipates with washing and airing.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
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How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.