The elegant design backpack cooler made from 300D polyester holds 16-18 cans, has FDA grade PEVA lining, PE foam insulation, and is waterproof. The top opening provides large access and the large front pocket has a hidden inner pocket for valuables. These pockets are accessed with high quality nylon zippers and upgraded pulls. There are mesh pockets on both sides; It also has a top handle and adjustable ergonomic shoulder straps with padding and mesh.