Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid vs Voyager Leakproof 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

Klean Kanteen

Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid

PFAS grade

Excellent 100/100

Overall grade

Excellent 88/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Stainless steel body, silicone gasket lid seal

Confidence

82%

PossibleSilicone gasket degradation

PossibleBacterial growth in vacuum seal

PossibleSurface corrosion under acidic conditions

PlanetBox Voyager Leakproof Lunch Box

Planetbox

Voyager Leakproof Lunch Box

PFAS grade

Good 70/100

Overall grade

Good 54/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Stainless steel container, silicone seal gasket

Confidence

72%

PossibleSilicone gasket degradation

PossibleStainless steel pitting (chronic use)

PossibleMicroplastic from gasket wear

Where these two actually differ

  • We flag Bacterial growth in vacuum seal and Surface corrosion under acidic conditions on the Klean Kanteen and not on the Planetbox.
  • We flag Stainless steel pitting (chronic use), Microplastic from gasket wear and Bacterial growth if seal fails on the Planetbox and not on the Klean Kanteen.
  • Both carry a flag for Silicone gasket degradation, so neither choice avoids it.
  • The Klean Kanteen is Stainless steel body, silicone gasket lid seal where the Planetbox is Stainless steel container, silicone seal gasket, which is most of the difference in these two grades.
  • The gap is 30 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 →

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