27oz Wide Water Bottle with Loop Cap vs 17 Oz Stainless Steel Vacuum 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
Excellent 100/100
Overall grade
Excellent 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
18/8 stainless steel, no interior coating
Confidence
92%
PossibleCap or closure contamination
PossibleBacterial or mold growth from moisture retention
Mira
17 Oz Stainless Steel Vacuum Insulated Water Bottle
PFAS grade
Excellent 80/100
Overall grade
Good 72/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Stainless steel interior and exterior, plastic lid/cap
Confidence
78%
PossiblePlastic lid/cap degradation and leaching
PossibleBacterial growth in lid mechanism or seams
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 Mira.
- We flag Plastic lid/cap degradation and leaching and Bacterial growth in lid mechanism or seams on the Mira and not on the Klean Kanteen.
- The Klean Kanteen is 18/8 stainless steel, no interior coating where the Mira is Stainless steel interior and exterior, plastic lid/cap, which is most of the difference in these two grades.
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