This is an insulated bottle pouch for PET bottles. It has a handle, making it easy to carry. ・Unused ・Not waterproof ・May leak water due to condensation ・May cause color transfer (as stated in the instructions) Material: Outer: Polypropylene (non-woven fabric) Inner: Aluminum, Polyethylene This item has been stored at home, so I'm selling it to someone who doesn't mind minor details. Shipping included.