Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid vs Latchlok Click Food Storage Container: which is safer?

Where these two actually differ

• We flag Silicone gasket degradation, Bacterial growth in vacuum seal and Surface corrosion under acidic conditions on the Klean Kanteen and not on the Prepara.
• We flag Microplastics and leaching at elevated temperature and PFAS in polymer or surface additives on the Prepara and not on the Klean Kanteen.
• The Klean Kanteen is Stainless steel body, silicone gasket lid seal where the Prepara is Plastic (likely polypropylene or copolyester); locking mechanism is metal or plastic., 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.