Throw Swig Life's Packi Backpack Cooler over your shoulder to keep you moving! Just add ice to keep 4 gallons (16 liters) of your favorite drinks and snacks cold for hours. The unique, wireframe, zip-top construction allows the cooler to remain fully opened while being filled and used. It features two, Swig-sized side pockets with magnetic snaps, as well as a secure, waterproof zipper pocket that is perfect for storing your phone, keys, and other valuables.