Yeti has led the way in keeping things cold (or hot). Their hard coolers were revolutionary, bear-proof, and heavy. We're not too worried about bears busting into our hard coolers. The Flip coolers are soft, light, and easy to carry. Flip 12 holds 12 beers. Flip 18 holds 18-20. The square design sits nicely in the back of a vehicle, or the floor of a boat. Completely leak-proof, and keeps ice for days.