LEAK PROOF INSULATED COOLER BACKPACK: Upgraded inner insulated thicken material and leak proof PEVA liner are work together to keep drinks/food cold or hot for many hours and anti-linking. The interior lining is made of excellent high-grade material and easy to clean, and it is on all sides, even top side. ROOMY CAPACITY BACKPACK COOLER: 30 cans/30L, measures: 17" x 12" x 8". cooler backpack is large enough to organize all your necessities, such as drinks, beer, fruit, ice pack, meals, tall beverages, snacks, cellphone and so on. Also it can hold 2 bottles of wine on side pockets. MULTIPLE POCKETS: 1 main insulated leak proof storage compartment for drinks or food, 1 large zipper pocket in front for dry items and tableware, also it includes a mesh pocket and a zip pocket inside, 1 vertical design front zip pocket for cellphone or small items, and 1 zipper pocket on the lid used to organize snacks, 2 mesh side pockets are perfect for wine or water bottle. There is 1 beer opener on the s...