Cold Tumbler vs 16oz Rise Tumbler: which is safer?
These two grade almost identically. Pick on price and preference; neither has a PFAS edge.
Ember
Cold Tumbler
PFAS grade
A 100/100
Overall grade
A 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
stainless steel with silicone seal
Confidence
72%
PossibleSilicone seal degradation and microbial growth
PossibleCoatings or adhesives on printed logos
Klean Kanteen
16oz Rise Tumbler
PFAS grade
A 100/100
Overall grade
A 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Stainless steel body, powder-coat finish
Confidence
82%
PossiblePowder-coat finish degradation
PossibleBacterial growth in crevices
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 insulated travel drinkware: see the full ranking