Restaurantware Bento Tek 29 oz Blue and Yellow Lunch Box BPA-Free, Microwave-Safe Fork and Spoon 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 container degradation during heating or aging 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 plastic lunch box, stainless steel utensils 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.
• We are less certain about the Bento Tek grade, at 55% confidence against 82%, because it discloses less.