this 23 Qt. Engle Kryptek® backpack cooler is made of 500 Denier polyester. It has a waterproof TPE coating for easy cleaning and an interior radiant barrier liner to keep items colder longer. It also has 1" thick closed cell foam insulation. Offered in white or camoflauge, this 19" x 17 1/2" x 8 1/2" bag features two heavy-duty water-resistant top zippered compartments, a flat bottom with non-skid feet, mesh side pockets, a large zippered front pocket, large outer front and back pockets, padded shoulder straps and sturdy tote handles. Add an embroidered logo for brand awareness!