You can put your drink in it and freeze it, and it can be used as a cooler pack when carried with your lunch. After you've finished your drink, it folds up small, making it a great item. Body: Silicone, ABS resin Lid: ABS resin Packing: Silicone Carabiner: Aluminum It will be shipped without the box. The box will be folded and included. Thank you for looking. Thank you very much. This is a set of two, but individual sales are possible.