16oz Rise Tumbler vs 36oz Rise Tumbler with Straw Lid: which is safer?
Klean Kanteen 36oz Rise Tumbler with Straw Lid is our pick: better on PFAS and on the overall hazard picture.
Klean Kanteen
16oz Rise Tumbler
PFAS grade
Excellent 95/100
Overall grade
Excellent 83/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Stainless steel body, powder-coat finish
Confidence
82%
PossiblePowder-coat finish degradation
PossibleSeal degradation and microbial growth
PossibleThermal shock to seals
Our pick
Klean Kanteen
36oz Rise Tumbler with Straw Lid
PFAS grade
Excellent 95/100
Overall grade
Excellent 87/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Stainless steel body, likely polypropylene or polyester straw lid
Confidence
72%
PossiblePolypropylene lid and straw thermal stability
PossibleStraw biofilm and microbial growth
Where these two actually differ
- We flag Powder-coat finish degradation, Seal degradation and microbial growth and Thermal shock to seals on the Klean Kanteen and not on the Klean Kanteen.
- We flag Polypropylene lid and straw thermal stability and Straw biofilm and microbial growth on the Klean Kanteen and not on the Klean Kanteen.
- The Klean Kanteen is Stainless steel body, powder-coat finish where the Klean Kanteen is Stainless steel body, likely polypropylene or polyester straw lid, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
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