Klean Kanteen · Portable Water Bottles
Klean Kanteen Rise Classic Insulated Water Bottle
Brand PFAS statement on record, which we have not verified.
Klean Kanteen describes its bottles as BPA, PFAS and lead-free. We record that as an unverified brand claim.
Brand says: “Klean Kanteen describes its bottles as BPA, PFAS and lead-free.”
We flunk more products than we pass. This one earned its grade. How we grade
Material
stainless steel body, foam insulation, stainless steel cap
Brand disclosure
Brand claims PFAS-free
Lab data
No public lab test
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What Klean Kanteen Rise Classic Water Bottle is made of, ingredients and materials
The Rise Classic uses 18/8 stainless steel (304-grade) for both the body and cap, which is highly resistant to corrosion and does not leach metals into water under normal use. Stainless steel has no reactive coating that can degrade or flake, eliminating a major failure mode in lower-cost water bottles. The foam insulation is a closed-cell material that sits between the inner and outer steel walls; as long as the seal integrity is maintained, the insulation does not contact the drinking water directly.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Cap gasket and seal contamination
Rubber or silicone gaskets can degrade over time or harbor bacterial growth if not dried thoroughly after washing. Regular cleaning and periodic replacement (as advised by the manufacturer) mitigates this risk.
What’s reassuring
Brand-stated PFAS-free
The brand states this product is PFAS-free. We have not verified the claim.
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
Metal leaching (aluminum, nickel, chromium)
18/8 stainless steel (304-grade) is passive and food-contact-approved; no leaching is expected in typical conditions. Chromium in the alloy is in a stable, bound form and does not migrate into water.
Coating degradation and flaking
No polymer coating is listed on the bottle exterior or interior; the metal itself is the barrier. This eliminates a primary failure mode in coated bottles.
Foam insulation off-gassing or particle shedding
Closed-cell foam does not contact the drinking water; no off-gassing is expected. Damage to the outer shell could theoretically expose the foam, but the sealed design prevents routine contact.
Thermal shock fracture (glass-like failure)
Stainless steel does not undergo thermal shock failure like glass or ceramic. Rapid temperature changes do not pose a material-safety risk with this bottle.
How is this PFAS grade calculated?
The brand's record and disclosure
Klean Kanteen has stated a commitment to avoiding fluorinated coatings and linings in its bottles. The company publishes material sourcing information and has a public history of phasing out problematic chemicals (e.g., moving away from BPA in earlier product lines). No major safety recalls or hazardous-substance allegations against this specific model are on record as of available sources.
How it compares in its category
Stainless steel water bottles show lower concern in the portable-bottle category compared to materials linked to plastic leaching and coating failure. Most competitors in the insulated market use either plastic outer layers (microplastic and BPA/BPS risk if scratched or heated) or epoxy/polyester coatings that can degrade over time. Klean Kanteen's all-metal construction is a premium approach that trades weight for durability and chemical safety.
If you buy it
Clean the bottle regularly with mild soap and warm water; avoid abrasive scrubbers that could damage the cap seal. Stainless steel is not affected by hot or cold beverages, so there are no temperature restrictions. Replace the cap gasket if leaking develops or if you notice cracks in the rubber seal, as this is the main point of wear. Do not place the bottle in a dishwasher if the manufacturer advises against it, as heat cycling can eventually weaken the seal.
What is not known about PFAS in this product?
- Basis
- Model estimate, 82% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Klean Kanteen has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
More portable water bottles 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.