The original AO canvas 24 pack has been in the cooler game for over 30 years. The canvas cooler has been a staple for the AO brand with good reason. Their canvas cooler's exterior is made up of 600 denier polyester canvas, with a heavy duty backing for exterior strength, and a Scotchguard 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. The canvas coolers are most popular for boating, picnics, lunch use, and traveling.