Leakproof Oasis Go+ Tumbler 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.
Ello
Leakproof Oasis Go+ Tumbler
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePhthalates in elastomer seals
PossibleMicroplastics from coating or material degradation
LikelyBacterial or mold growth in seal cavity
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 Phthalates in elastomer seals, Microplastics from coating or material degradation, Bacterial or mold growth in seal cavity and Degradation of seal elasticity over time on the Ello 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 Ello.
- The Ello is Double-wall plastic tumbler with leakproof seal 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