Brand New Leak-proof & Insulated：High-density insulation material and leak-proof liner inside of the insulated cooler backpack work together to make sure anti-leaking and keep food hot / cold for 16 hours. The interior lining is made of high quality material and easy to clean. You can drink cold beer,eat fresh snacks or fruit with friends or family anytime. Large capacity & Multiple Compartments: Leak-proof backpack cooler：19x 13x 9（LxWxH）. Main bag can hold up to 35 cans(32L). Maelstrom insulated backpack provides several pockets for handy storage and convenient organization. Spacious backpack packed with roomy zipper main compartment,1 top zipper pocket,1 front zipper pocket,1 front elastic rope net,1 front cutlery storage bag,2 mesh side pockets and a hidden back zipper pocket，1 shoulder strap card pocket. Ergonomic & Comfortable Design: Thicker padded back with ergonomic breathable design paired with adjustable,breathable and padded S shoulder straps.