12 oz Kids Water Bottle Stainless Steel vs Double Vacuum Insulated Stainless Steel Water Bottle: which is safer?
Mira 12 oz Kids Water Bottle Stainless Steel is our pick: better on PFAS and on the overall hazard picture.
Our pick
Mira
12 oz Kids Water Bottle Stainless Steel
PFAS grade
A 100/100
Overall grade
A 96/100
Verdict
Buy
Hazard flags
⚑ 1
Material
Stainless steel, no coating disclosed
Confidence
78%
PossibleBacterial growth in interior or seals
Mira
Double Vacuum Insulated Stainless Steel Water Bottle
PFAS grade
A 100/100
Overall grade
A 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
stainless steel (bare, no known coatings)
Confidence
82%
PossibleSilicone gasket and plastic lid degradation
PossibleBacterial growth in the vacuum layer or lid seals
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 filtration bottles: see the full ranking