- Scratch resistant ripstop nylon surface with PU coating, secure zipper, 8mm high-density foam insulation and leakproof PEVA liner for durability and reliable temperature control. - Keeps drinks cool up to 8 hours: includes 12 self-absorbent ice packs; interior is non-toxic PEVA with thick waterproof insulated foam to preserve flavor and freshness. Reusable ice packs save money and maintain temperature for a full day. - Hot and cold separation design: double-decker backpack with a bottom cold compartment (can hold ice packs and cold contents) and an upper compartment for warm, dry foods and lunch. Stores hot and cold separately for better results; versatile as a diaper bag to keep drinks cold and breast bottles warm. - Leakproof and waterproof construction: PEVA liner paired with SBS waterproof zipper, waterproof nylon and PU coating for strong water resistance. Upper layer provides 80% leakproof protection for hot contents; lower layer provides 100% leakproof protection for cold contents. To prevent moisture, place ice cubes and cold drinks in the lower layer. - Large capacity and multiple pockets: measures 16.5 x 13.8 x 6.7 inches and holds 36 cans. Includes 2 front pockets, 1 top pocket, 2 side pockets and 1 anti-theft pocket for phones, snacks and cutlery. Two insulated compartments are ample for beers, tall beverages, meals and vegetables. Includes a 3-in-1 bottle opener for wine and beer. - Stylish and versatile gift: convertible insulated backpack can be used as a chic tote or hands-free backpack, with a back trolley sleeve for luggage handles and dual padded shoulder straps for comfort. A great gift for women for lunch, picnics, work, travel, hiking, biking, park, beach, zoo or Disney outings. - Use scenarios: ideal for hiking or outdoor picnics; for beach or park days with family; as a diaper bag on trips to keep drinks cold and bottles warm.