Restaurantware-Bento Tek Meal Prep Containers Disposable To Go Food Boxes vs Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid: which is safer?

Where these two actually differ

• We flag Microplastics from degradation when heated or washed repeatedly, Odor or volatile organic compound release when heated, Contamination or bacterial growth from food residue and Opacity or cloudiness from repeated washing indicating polymer degradation on the Bento Tek 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 Bento Tek.
• The Bento Tek is polypropylene (PP), paperboard 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.