Klean Kanteen Cup vs Halo Tumbler: which is safer?
These two grade almost identically. Pick on price and preference; neither has a PFAS edge.
Klean Kanteen
Klean Kanteen Cup
PFAS grade
A 100/100
Overall grade
A 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Stainless steel body with bamboo or plastic lid
Confidence
78%
PossibleBacterial growth on lid (bamboo variant)
PossibleMicroplastic shedding from lid
Reduce
Halo Tumbler
PFAS grade
A 100/100
Overall grade
A 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Stainless steel and plastic lid
Confidence
72%
PossiblePlastic lid degradation and replacement
PossibleMicrobial growth in double-wall design
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 drink tumblers: see the full ranking