20oz TKWide with Café Cap, Tofu vs Vacuum Insulated Wine Tumbler 10 oz: which is safer?
Klean Kanteen 20oz TKWide with Café Cap, Tofu is our pick, better on PFAS and on the overall hazard picture.
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
MiiR
Vacuum Insulated Wine Tumbler 10 oz
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleLid coating or sealant composition (unspecified)
PossibleVacuum seal degradation and microbial growth
PossibleMicroplastic shedding from lid or cap
Where these two actually differ
- 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 MiiR.
- We flag Lid coating or sealant composition (unspecified), Vacuum seal degradation and microbial growth and Microplastic shedding from lid or cap on the MiiR and not on the Klean Kanteen.
- The Klean Kanteen is Stainless steel bottle, stainless steel cap where the MiiR is Stainless steel interior, vacuum insulation, unspecified lid/exterior coating, which is most of the difference in these two grades.
- We are less certain about the MiiR grade, at 45% confidence against 85%, because it discloses less.
Both products run through the same public rubric, which covers 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