Streeterville Tumbler 40-oz 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.
Contigo
Streeterville Tumbler 40-oz
PFAS grade
Good 70/100
Overall grade
Good 62/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Stainless steel exterior, plastic/elastomer lid and base
Confidence
72%
PossibleLid/base elastomer degradation
PossibleBacterial growth in seals
Our pick
Klean Kanteen
20oz TKWide with Café Cap, Tofu
PFAS grade
Excellent 95/100
Overall grade
Excellent 83/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Stainless steel bottle, stainless steel cap
Confidence
85%
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 Lid/base elastomer degradation and Bacterial growth in seals on the Contigo 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 Contigo.
- The Contigo is Stainless steel exterior, plastic/elastomer lid and base where the Klean Kanteen is Stainless steel bottle, stainless steel cap, which is most of the difference in these two grades.
- The gap is 25 points, wide enough that this is not a close call, and the Klean Kanteen is the one to buy.
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