Klean Kanteen · Insulated Drink Tumblers
16oz Rise Tumbler - US 5869 - Dusty Orchid
Lower concern. Stainless steel tumbler with standard coating.
Klean Kanteen's Rise Tumbler is stainless steel with a powder-coated finish. No PFAS-specific claims made by brand, but powder coating on drinkware is typically lower risk than water-repellent coating or nonstick treatments.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel body, powder-coated finish
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.
The full breakdown
What it's made of and why it matters
The Rise Tumbler uses a stainless steel body (likely 18/8 or similar food-grade alloy) with a powder-coat finish applied to the exterior. Stainless steel is inherently corrosion-resistant and does not leach metals into beverages under normal use. The powder coat serves as a decorative and protective barrier; Klean Kanteen does not use Teflon-type coating (Teflon) or other Teflon-family coating linings in this product, eliminating fume risk from heating.
The brand's record and disclosure
Klean Kanteen has built a reputation around stainless steel and glass alternatives to plastic, though the company remains largely silent on detailed material sourcing and testing certifications. No major recalls or safety controversies are on record for this product line. The brand does not trumpet third-party certifications (e.g., NSF, BPA-free claims) prominently, but stainless steel tumblers are inherently free of BPA and phthalates by material class.
How it compares in its category
Among insulated tumblers, stainless steel with powder coating is a mainstream choice, comparable in safety to competitors like Hydro Flask and S'well. It avoids the plastic-lined interior liabilities of cheaper tumblers while maintaining durability and thermal performance. The powder coat finish is standard across brands; no evidence suggests Klean Kanteen's formulation differs materially from industry norms in terms of hazard.
If you buy it
Hand wash or rinse gently to avoid scratching the powder coat; aggressive scrubbing will not cause coating breakdown to leach toxins but may expose bare metal (which itself is food-safe stainless). Avoid prolonged contact with acidic beverages at very high temperatures, though stainless steel handles this far better than aluminum. Replace only if the coating becomes severely chipped and cosmetics matter to you; minor surface wear does not affect safety. Do not microwave or place in direct flame.
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
Powder coatings on stainless steel tumblers do not typically degrade into toxic compounds. No reports of Klean Kanteen Rise Tumblers releasing hazardous substances from normal use or minor wear.
Metal leaching (stainless steel)
Stainless steel bodies do not leach nickel, chromium, or other metals into cold or moderately warm beverages. Risk is negligible unless the alloy is of substandard grade, which is not indicated for this brand.
VOC off-gassing from coatings
Powder coats may emit trace volatile organic compounds, particularly when new or if exposed to heat. Airing out the tumbler before first use and hand-washing with warm water will minimize any odor; off-gassing poses no documented health risk in normal use.
Microplastic shedding
Stainless steel does not shed microplastics. The powder coat is a solid polymeric film, not a coating prone to fragmentation during typical drinking or dishwashing.
Seal or gasket materials (interior lid/closure)
Lids on insulated tumblers often include silicone or rubber seals; Klean Kanteen does not disclose specific elastomer sourcing or testing for BPA or phthalates, though silicone is generally low-risk. Request product materials list from manufacturer if concerned about lid components.
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.
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.