27oz Wide Water Bottle with Loop Cap vs FreeSip Stainless Steel Water Bottle: which is safer?
Klean Kanteen 27oz Wide Water Bottle with Loop Cap is our pick, better on PFAS and on the overall hazard picture.
Our pick
Klean Kanteen
27oz Wide Water Bottle with Loop Cap
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCap or closure contamination
PossibleBacterial or mold growth from moisture retention
Owala
FreeSip Stainless Steel Water Bottle
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePlastic lid/spout composition (BPA, BPS, phthalates)
PossibleBacterial growth in straw/spout assembly
PossibleGasket/seal degradation over time
Where these two actually differ
- We flag Cap or closure contamination and Bacterial or mold growth from moisture retention on the Klean Kanteen and not on the Owala.
- We flag Plastic lid/spout composition (BPA, BPS, phthalates), Bacterial growth in straw/spout assembly and Gasket/seal degradation over time on the Owala and not on the Klean Kanteen.
- The Klean Kanteen is 18/8 stainless steel, no interior coating where the Owala is Stainless steel with plastic lid/spout, which is most of the difference in these two grades.
Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More portable water bottles, see the full ranking