Sealproof and insulated - our backpack cooler is isolated with a thickened 8 mm foam with advanced silver peva gasket to prevent UV rays, and keeps drinks and food for up to 16 hours (use with ice packages). PEVA primer of the first class quality sealing and hot seamless presses provides 100 %waterproof and easy cleaning. The zipper is not seal, be careful not to overthrow when using. Cooling backpack size 18.1 'x12.6' x7.5 '. The main pocket with insulated for drinking and food, 1 upper zipper pocket to store snacks, 2 fork knife set, phone, wallet and other accessories to keep your 2 front zipper pockets, 1 front elastic rope network, 2 -side elastic rope. To hang the switches, a high -quality cooler is a highly resistant and high -ended nylon -resistant nylon. You can enjoy your favorite beverages - our ergonomic and comfortable design has an ergonomic design that can reduce your shoulder pressure and make a comfortable journey. Moreover, light design and adjustable shoulder straps can meet the needs of people of different sizes.. Multi -purpose refrigerant bag - our refrigerant backpack looks good at your favorite food and drinks, which is a great choice for all outdoor and indoor activities. It can also be used as a daily backpack, lunch backpack. perfect for. When you don't need it, fold it without space.