Traveler 40 oz Stainless Steel Water Bottle vs 27oz Wide Water Bottle with Loop Cap: which is safer?
Klean Kanteen 27oz Wide Water Bottle with Loop Cap is our pick, better on PFAS and on the overall hazard picture.
HydroJug
Traveler 40 oz Stainless Steel Water Bottle
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleBacterial or mold growth in storage
PossibleLid and closure materials
PossibleCorrosion pitting from prolonged acidic or salty beverages
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
Where these two actually differ
- We flag Bacterial or mold growth in storage, Lid and closure materials and Corrosion pitting from prolonged acidic or salty beverages on the HydroJug and not on the Klean Kanteen.
- We flag Cap or closure contamination and Bacterial or mold growth from moisture retention on the Klean Kanteen and not on the HydroJug.
- The HydroJug is Stainless steel body, no coating disclosed where the Klean Kanteen is 18/8 stainless steel, no interior coating, which is most of the difference in these two grades.
- These two are 5 points apart, close enough that price and fit should decide it rather than our grade.
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