Lunch Food Box vs Esquirla Lunch Box Stainless Steel Leakproof Rectangle Portable Food Container Reusable Stackable Meal Prep Container wi: which is safer?
Klean Kanteen Lunch Food Box is our pick: better on PFAS and on the overall hazard picture.
Our pick
Klean Kanteen
Lunch Food Box
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleBamboo fiber lid degradation or contaminant absorption
PossibleGasket or seal material composition
PossibleBamboo fiber formaldehyde or chemical treatment residue
Sistema
Esquirla Lunch Box Stainless Steel Leakproof Rectangle Portable Food Container Reusable Stackable Meal Prep Container wi
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleSilicone gasket degradation
PossibleStainless steel pitting/corrosion
Where these two actually differ
- We flag Bamboo fiber lid degradation or contaminant absorption, Gasket or seal material composition and Bamboo fiber formaldehyde or chemical treatment residue on the Klean Kanteen and not on the Sistema.
- We flag Silicone gasket degradation and Stainless steel pitting/corrosion on the Sistema and not on the Klean Kanteen.
- The Klean Kanteen is stainless steel with bamboo fiber lid where the Sistema is stainless steel and silicone gaskets, 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 & food containers: see the full ranking