Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid vs Rectangular Lunch Box 3-Piece Set with Insulated Stripe Bag: 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 Lock & Lock.
• We flag Migration from polypropylene (oligomers, additives) and Water-repellent coating composition (insulated bag) on the Lock & Lock and not on the Klean Kanteen.
• The Klean Kanteen is Stainless steel body, silicone gasket lid seal where the Lock & Lock is polypropylene food containers, insulated polyester bag with water-repellent finish, which is most of the difference in these two grades.
• The gap is 75 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 Lock & Lock grade, at 45% confidence against 82%, because it discloses less.