Klean Kanteen
27oz Classic with Flip Seal Sport Cap
50/ 100 · 75% confidence
1 of 4 parts have unknown materials. We score only from captured evidence and never guess a material, so unknown parts count against the score and lower our confidence. If a seller confirms these materials, the score changes.
Where to buy
Parts & evidence
| Part | Material | State | Evidence |
|---|---|---|---|
| body | 90% post-consumer recycled 18/8 stainless steel | non-plastic | “Made from certified 90% post-consumer recycled 18/8 stainless steel” listing ↗ |
| cap | BPA-free | plastic | “BPA-free cap” listing ↗ |
| coating | Klean Coat® | unknown | “chip-resistant Klean Coat® finish” listing ↗ |
| straw | stainless steel | non-plastic | “Includes reusable stainless steel straw” listing ↗ |
Research on plastic in water bottles
Official
Peer-reviewed journals, government agencies, and standards bodies.
“The researchers found that, on average, a liter of bottled water included about 240,000 tiny pieces of plastic.”
“They found that on average, a liter contained some 240,000 detectable plastic fragments—10 to 100 times greater than previous estimates, which were based mainly on larger sizes.”
Lamont-Doherty Earth Observatory / Columbia University · 2024
Quoted verbatim and linked to the source. We make no health claims of our own. Read the sources and judge them yourself.
Seller links may be affiliate links. Disclosure. We state observed evidence, not verdicts. See the scoring rubric.