DAM 2-in-1 BACKPACK COOLER CB30: The demands of the everyday call for a durable pack dedicated to just that. This is one of our most exciting products. Its Patent Pending design gives you the convenience and simplicity of the backpack you are used to, plus the added utility of a cargo bag and the functionality of a cooler. The cooler holds 6 x 12 Oz (355ml) Cans and so much more.