Klean Kanteen · Portable Water Bottles
Klean Kanteen 16oz Rise Classic with Flip Seal Sport Cap
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
18/8 stainless steel body, thermoplastic cap
Brand disclosure
Brand claims PFAS-free
Lab data
No public lab test
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What Klean Kanteen 16oz Rise Seal Sport Cap is made of, ingredients and materials
The Rise Classic body is 18/8 stainless steel, an austenitic alloy with 18% chromium and 8% nickel that resists corrosion and does not leach metals into beverages under normal use. The cap is thermoplastic (likely polypropylene or polyethylene-based), which avoids the brittleness and leaching risks of rigid plastic caps while still being lightweight and durable. This material pairing eliminates the primary hazards of ceramic-lined or aluminum bottles, no glaze degradation, no aluminum hydroxide leaching, and no coating wear-through.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Thermoplastic cap degradation and leaching
Thermoplastic caps can soften, discolor, or leach residual monomers (typically trace amounts) with repeated hot-water washing or prolonged contact with acidic or oily beverages. Risk is low under normal use but increases if the cap is older or damaged.
Bacterial or mold growth in cap seal
Any reusable bottle cap creates a moist microhabitat if not dried between uses. Klean Kanteen caps, with their flip-seal design, can trap water in the hinge or seal channel. Regular rinsing and air-drying mitigate this risk.
Cap assembly or closure failure
The flip-seal mechanism can loosen or fail if dropped or subjected to thermal cycling, potentially allowing beverage leakage or dust ingress. Inspect the hinge and seal regularly and replace the cap if movement becomes loose.
What’s reassuring
Brand-stated PFAS-free
The brand states this product is PFAS-free. We have not verified the claim.
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Nickel release from stainless steel
18/8 stainless steel is passivated (oxidized) to prevent nickel leaching in normal conditions. No published recalls or hazard alerts exist for Klean Kanteen bottles. Individuals with severe nickel sensitivity may want to confirm passivation durability with the manufacturer.
Off-gassing or odor from thermoplastic
New thermoplastic caps may emit mild plastic odor when first purchased. This typically fades after rinsing and airing. No volatile organic compound off-gassing alerts are on record for Klean Kanteen caps.
How is this PFAS grade calculated?
The brand's record and disclosure
Klean Kanteen publicly claims PFAS-free manufacturing and has marketed itself on this stance for several years, though we have not independently verified this claim in third-party testing. The brand has no established recalls related to leaching or coating failure in their stainless steel bottles. Klean Kanteen does not appear to hold BPA-free certifications from NSF or similar bodies on public record, though the material choice (stainless steel and thermoplastic) is inherently free from BPA concerns.
How it compares in its category
Stainless steel bottles like this one have lower concern among portable water bottles because the material is inert and does not degrade under normal beverage conditions or temperature swings. They outperform plastic-lined or aluminum alternatives in leaching risk and coating durability. The thermoplastic cap is typical of mid-range reusable bottles; it is simpler and less leach-prone than silicone seals or elastomer gaskets, though caps can wear and degrade with repeated opening if not rinsed and dried.
If you buy it
Rinse and dry the cap after each use to prevent bacterial or mold growth in the seal area, especially if stored with liquid inside. Do not place the cap in a dishwasher if the manufacturer recommends hand-washing; high heat can accelerate thermoplastic degradation. The stainless steel body is not a material linked to PFAS and can tolerate boiling water for cleaning. Replace the cap if the seal becomes loose, cracked, or visibly clouded, as a compromised seal invites contamination.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% 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.
What are the PFAS-free alternatives to Klean Kanteen 16oz Rise Classic with Flip Seal Sport Cap?
- 18/8 stainless steel, no interior coating
- The brand calls it PFAS-free, which we have not verified
- Cap or closure contamination
2 hazards checked on this product, all on its full breakdown.
- stainless steel body, foam insulation, stainless steel cap
- The brand calls it PFAS-free, which we have not verified
- Cap gasket and seal contamination
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.