The iCOOL Extreme waterproof cooler backpack is made from welded heavy duty 500D PVC taurpalin and features a large 42 quart capacity in the waterproof main compartment. It includes a removable insulated 30-can cooler with zippered closure, PEVA heat seal lining and 6mm foam insulation. The easy roll-down top provides quick access to gear and is secured with four buckle straps. The exterior features a mesh front pocket with hook & loop closure and elastic tie down straps, zippered pocket, D-rings and two mesh side water bottle pockets. The back has a soft, breathable padding, air mesh backpack straps, waist and chest straps, and a carry handle.