54-Quart Steel-Belted Cooler vs Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid: which is safer?

Where these two actually differ

• We flag Plastic lining degradation and microplastic release, Bacterial growth in plastic crevices and Steel exterior corrosion and rust migration on the Coleman 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 Coleman.
• The Coleman is Polyurethane foam insulation, steel exterior, plastic 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 30 points, wide enough that this is not a close call, and the Klean Kanteen is the one to buy.