The 18-pack backpack cooler was built for adventure. Not only is it a cooler but also a backpack! Take it on a road trip, out boating, fly fishing, off roading or for any travel to keep your drinks and snacks cold all day. Insulated with 3/4 thick, high density closed cell foam and lined with a leakproof, eco-friendly welded TPU liner. Guaranteed not to leak or sweat. Will hold ice for up to 24 hours in 120-degree heat. Comes with a removable shoulder strap and a dry exterior pocket. Dimensions: 15 x 6 x 16;Internal Dimensions: 13.5 x 4.5 x 14.5;Capacity: 18 Cans plus 7 lbs. of ice;Includes a removable shoulder strap.