Cooler Backpack Insulated Waterproof Leak Proof Beach Cooler Bag Lightweight Lunch Picnic Camping Backpack Cooler for Men and Women Dimension: 13"x7.9"x16.9" Capacity: 30 cans/30L Material: The outer layer is durable 600D oxford cloth, the inner layer is environmentally friendly PEVA material, and the middle layer is thick pearl cotton. Features: Due to the superior fabric, this cooler backpack is firm and durable, which will not tear or scratch and it is water-resistant, you don't have to worry about its load-bearing capacity. It is a great cooler bag with excellent cold and insulation effect. Multi Purpose: The cooler backpack not only can be a insulated lunch backpack, but also beach cooler backpack, picnic backpack, hiking backpack, camping backpack, fishing bag, travel backpack and so on. It keeps drinks and food cool and fresher for many hours.