Premium Material The exterior of the isothermal cooler backpack is made of 1680D Oxford fabric, which is waterproof, stain-resistant, high-density, durable, water-resistant and easy to clean. The inner lining is made of PEVA sheet and filled with 8mm thick EPE foam with high heat resistance. Multifunctional pocketThe ice insulated backpack has a large opening for easy loading and download. Side mesh pockets for water bottle and umbrella. The lid of the bag has a separate 5L waterproof space for snacks; There are two front pockets for utensils and keys, a tablet and more. Mesh pocket with shoulder strap for cell phone. Multi-pocket design for easy classification and management of items. Large CapacityThe picnic bag has 28 liters (45 x 30.5 x 20.8 cm) and has a large carrying capacity. . Whether you're packing an outdoor picnic for the family, planning lunches and snacks for the kids, preparing a cold drink for an outdoor event, or preparing a camping barbecue, this multipurpose waterproof and insulated backpack is an indispensable tool. . New CraftsmanshipThe thermal insulated backpack has moved from traditional folding sewing technology to using seamless hot stamping technology to connect the inner lining and ensure excellent water resistance. The arched opening design prevents the car from getting dirty due to internal liquid spillage due to bumps on the road. PORTABILITYDesigned with padded handles and shoulder straps, the strap design Adjustable shoulder strap provides multiple carrying options for easy portability. Use mesh foam and thickened and widened shoulder straps to provide comfort when carrying many items, reduce fatigue, free your hands and make walking easier.