Carryout Lunch Tote vs Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid: which is safer?
Klean Kanteen Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid is the clear pick. Hydro Flask Carryout Lunch Tote carries a failing PFAS grade, and we never recommend buying a failing product.
Hydro Flask
Carryout Lunch Tote
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
LikelyPFAS in waterproof lining treatment
PossibleAzo dyes in recycled polyester
PossibleMicroplastics shedding from textile
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
Where these two actually differ
- We flag PFAS in waterproof lining treatment, Azo dyes in recycled polyester, Microplastics shedding from textile and Adhesive or coating leachables from lining-exterior bond on the Hydro Flask and not on the Klean Kanteen.
- We flag Silicone gasket degradation, Bacterial growth in vacuum seal and Surface corrosion under acidic conditions on the Klean Kanteen and not on the Hydro Flask.
- The Hydro Flask is Recycled polyester exterior, waterproof-treated lining where the Klean Kanteen is Stainless steel body, silicone gasket lid seal, which is most of the difference in these two grades.
- The gap is 75 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 lunch boxes: see the full ranking