Our backpack is an 18-pack cooler with padded backpack straps that you can take on any indoor or outdoor adventure.  The backpack is made with a canvas exterior that is made up of  600 denier polyester canvas, with a heavy duty backing for exterior strength, and a topcoat for UV protection. Insulated with ¾” thick polyurethane high-density closed cell foam, which makes it hard for air to be blown through and lined with a leak proof, eco-friendly welded TPU liner that has physical strength and elasticity making it abrasion resistant.