Cello Stainless Steel Lunch vs Lunch Food Box: which is safer?
Klean Kanteen Lunch Food Box is our pick: better on PFAS and on the overall hazard picture.
Ello
Cello Stainless Steel Lunch
PFAS grade
Excellent 80/100
Overall grade
Excellent 76/100
Verdict
Buy
Hazard flags
⚑ 1
Material
Stainless steel, bare uncoated
Confidence
82%
PossibleGasket and seal integrity
Our pick
Klean Kanteen
Lunch Food Box
PFAS grade
Excellent 100/100
Overall grade
Excellent 88/100
Verdict
Buy
Hazard flags
⚑ 3
Material
stainless steel with bamboo fiber lid
Confidence
78%
PossibleBamboo fiber lid degradation or contaminant absorption
PossibleGasket or seal material composition
PossibleBamboo fiber formaldehyde or chemical treatment residue
Where these two actually differ
- We flag Gasket and seal integrity on the Ello and not on the Klean Kanteen.
- 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 Ello.
- The Ello is Stainless steel, bare uncoated where the Klean Kanteen is stainless steel with bamboo fiber lid, 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