27oz Wide Water Bottle with Loop Cap vs 30 fl oz Stainless Steel Special Edition FreeSip Sway Insulated 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
30 fl oz Stainless Steel Special Edition FreeSip Sway Insulated Water Bottle
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePlastic lid/spout leaching (non-PFAS)
ReportedSilicone gasket degradation
PossibleBacterial or mold growth in valve assembly
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 leaching (non-PFAS), Silicone gasket degradation, Bacterial or mold growth in valve assembly and Thermal stress to plastic components 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 interior and exterior, plastic lid and 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