Our Cooler Backpack is perfect for transporting all your cold food/accessories in one trip! Unique function designs such as 3 unattached ice packs, a stainless steel bottle opener, an adjustable elastic strap for hanging tools, and a stretch cord for hanging sunglasses. With a large capacity of up to 40 cans (36L). This cooler backpack can keep your food fresh for up to 20 hours. This backpack cooler is perfect for outdoor adventures with friends or family.