The Polar Skin Backpack Cooler is a portable and highly insulated option that allows for the carry of Polar Skin products in the field and keeps ice from melting for 24 hours in 100+AdegF heat. This cooler accommodates up to two (2) Polar Skin(TM) Comprehensive Cooling Systems plus ice. Constructed of rugged canvas, a durable sweat/leak proof vinyl liner, and 0.75 in. thick high-density, closed-cell foam insulation. Cooler comes with a waterproof pocket, padded shoulder straps, and a lifetime warranty. Highly insulated carrier that accommodates up to 2 Polar Skin Comprehensive Cooling System plus ice Keeps ice for 24 hours in 100+AdegF heat Food grade liner that is leak-proof and sweat-proof 0.75 in. thick high density foam for insulation Constructed of heavy duty materials Comes with padded shoulder straps for hands-free transport and a waterproof side pocket for dry items Lifetime warranty Specifications Packaged: W 19.5 in. x L 15 in. x D 7.5 in. Weight: 3.8 lb