64 oz Black Stainless Steel Growler vs 20oz TKWide with Café Cap, Tofu: which is safer?
Klean Kanteen 20oz TKWide with Café Cap, Tofu is our pick: better on PFAS and on the overall hazard picture.
Coleman
64 oz Black Stainless Steel Growler
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleNickel leaching from stainless steel
PossibleLid gasket/seal degradation
PossibleBacterial or mold growth in seams
Our pick
Klean Kanteen
20oz TKWide with Café Cap, Tofu
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePowder-coat cap degradation over time
PossibleBacterial biofilm in cap threads and seals
PossibleThermal stress on seals at extreme temperatures
Where these two actually differ
- We flag Nickel leaching from stainless steel, Lid gasket/seal degradation and Bacterial or mold growth in seams on the Coleman and not on the Klean Kanteen.
- We flag Powder-coat cap degradation over time, Bacterial biofilm in cap threads and seals and Thermal stress on seals at extreme temperatures on the Klean Kanteen and not on the Coleman.
- The Coleman is Stainless steel, no surface treatment disclosed where the Klean Kanteen is Stainless steel bottle, stainless steel cap, which is most of the difference in these two grades.
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