This backpack cooler features a wear-resistant nylon surface with a waterproof PU coating, an 8mm-thick foam layer, and a leak-proof PEVA lining, all made of imported materials for quality assurance. The 8mm-thick foam combined with the silver-faced PEVA sealing layer provides up to 20 hours of cold preservation, suitable for various outdoor activities such as beach picnics, hiking, camping, and boating. The interior adopts a double-layer design to separately store cold drinks and dry food. The exterior is equipped with a front pocket and double side pockets for easy storage of snacks, mobile phones, wallets and other personal items. A bottle opener is included for added convenience. The leak-proof lining is made by seamless hot-pressing technology, but the zipper is not waterproof, so dumping should be avoided. The product measures 17 in. in height, 10.5 in. in length and 7.5 in. in width, with a capacity of up to 30 cans (330ml). The high-density nylon material is both waterproof and lightweight, and the thickened shoulder straps and back padding design make it more comfortable to carry than traditional coolers. Color: Black.