27oz Wide Water Bottle with Loop Cap vs Cold1 30 oz 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
Reduce
Cold1 30 oz Insulated Water Bottle
PFAS grade
Excellent 85/100
Overall grade
Excellent 77/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Double-wall stainless steel
Confidence
72%
PossibleLid and seal polymer hazards
PossibleBacterial growth and maintenance
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 Reduce.
- We flag Lid and seal polymer hazards and Bacterial growth and maintenance on the Reduce and not on the Klean Kanteen.
- The Klean Kanteen is 18/8 stainless steel, no interior coating where the Reduce is Double-wall stainless steel, 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