Klean Kanteen · Insulated Drink Tumblers
Klean Kanteen 10oz Rise Wine Tumbler
Lower concern. Stainless steel tumbler with minimal PFAS risk profile.
Klean Kanteen's Rise tumbler is stainless steel with a powder-coated exterior, inherently lower PFAS risk. No brand PFAS disclosures found, but material choice suggests minimal concern.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel with 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
The Klean Kanteen Rise Wine Tumbler is constructed from food-grade stainless steel (typically 18/8 austenitic) with a powder coat exterior finish. Stainless steel itself does not leach metals under normal use because its chromium oxide layer prevents corrosion. The powder coat is a baked epoxy or polyester resin applied to the exterior only, not in contact with beverages, making it a low-concern surface.
The brand's record and disclosure
Klean Kanteen has built reputation on reusable drinkware marketed as chemical-free and sustainable; the brand does not publicly disclose PFAS testing or manufacturing details for this product line. No product recalls or safety controversies are on record for this tumbler model. The brand emphasizes durability and material safety but remains silent on third-party certifications or PFAS testing.
How it compares in its category
Among insulated wine tumblers, stainless steel is among the safest options, avoiding ceramic glazes (lead/cadmium risk) and plastic liners (BPA/BPS leaching potential). Powder-coated stainless steel tumbler construction is standard in the premium reusable category and poses minimal chemical hazard compared to plastic alternatives or ceramic coatings.
If you buy it
Inspect the powder coat regularly for chips or scratches; if the coating is damaged and metal is exposed, discontinue use for beverages until repaired, as bare stainless steel can develop corrosion spots. Hand wash to preserve the exterior finish and avoid dishwasher heat. Replace if the interior shows rust spots or the seal degrades. Keep away from highly acidic or salty beverages stored for extended periods, which may accelerate minor surface changes.
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 degradation and exposure
The exterior powder coat may chip or wear with repeated use, mechanical damage, or dishwasher exposure. Intact coating poses no direct hazard; exposed areas are low-risk because the coating is external and not food-contact, but aesthetic and durability concerns exist.
Stainless steel corrosion under poor maintenance
Though stainless steel resists corrosion, prolonged exposure to chlorides (salt spray, salty beverages) or acidic liquids stored inside can initiate pitting on the interior surface over years. This is a slow process and typically cosmetic rather than a health hazard.
Thermal expansion and seal integrity
No safety concerns are on record for the seal or gasket materials in this model. Over time, repeated thermal cycling may degrade seals; monitor for leaks.
Lead or cadmium in coating or adhesives
No recalls or public information suggests lead or cadmium contamination in Klean Kanteen's powder coat or manufacturing. Modern powder coats used in food-contact vessel manufacturing typically comply with FDA limits.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% 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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✓Naturally PFAS-free material
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More insulated drink tumblers grades
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.