The best materials- lunch box is made from soft-touch, lightweight Bpa-free plastic with a silicone snap-strap that secures the box. Perfectly sized- bowl's generous six-cup capacity is perfect for pasta or a large salad, a removable tray holds two cups which is ideal for packing chips, sandwiches, or fruit. Tidy toting- fits neatly in bags and purses and even has a divider for the bowl to keep snacks and sides separated.