The RTIC 24 Can Backpack Cooler is made for hands-free adventure. Featuring a heavy-duty exterior, waterproof zipper, and up to 2 inches of closed cell foam insulation to lock in the cold - this leakproof backpack fits 30 qt, is made of 60% nylon, 38% PE and 2% stainless steel and floats so it can handle all your adventures, from the road to the water.