27oz Wide Water Bottle with Loop Cap vs FreeSip Stainless Steel Water Bottle: which is safer?
These two grade almost identically. Pick on price and preference; neither has a PFAS edge.
Klean Kanteen
27oz Wide Water Bottle with Loop Cap
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleNickel leaching from stainless steel
PossibleSurface corrosion and pitting over time
PossibleBacterial growth in cap seals
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 Nickel leaching from stainless steel, Surface corrosion and pitting over time and Bacterial growth in cap seals 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.
- These two are level, close enough that price and fit should decide it rather than our grade.
Both products run through the same public rubric: 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