Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid vs 40 oz Stainless Steel Lunch Box: which is safer?
Klean Kanteen Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid is our pick: better on PFAS and on the overall hazard picture.
Our pick
Klean Kanteen
Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleSilicone gasket degradation
PossibleBacterial growth in vacuum seal
PossibleSurface corrosion under acidic conditions
Ozark Trail
40 oz Stainless Steel Lunch Box
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleNickel leaching (from 304 stainless steel alloy)
PossibleGasket and seal leaching (polymer components)
PossibleBacterial growth in seams and crevices
Where these two actually differ
- We flag Silicone gasket degradation, Bacterial growth in vacuum seal and Surface corrosion under acidic conditions on the Klean Kanteen and not on the Ozark Trail.
- We flag Nickel leaching (from 304 stainless steel alloy), Gasket and seal leaching (polymer components) and Bacterial growth in seams and crevices on the Ozark Trail and not on the Klean Kanteen.
- The Klean Kanteen is Stainless steel body, silicone gasket lid seal where the Ozark Trail is Stainless steel body, uncoated interior, 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 lunch boxes: see the full ranking