The ICEMULE Classic™ Large Cooler has a 20-liter capacity. Offers a special feature and that is the IM Airvalve™ which allows air to be added to the insulation layer for increased insulating capability and also allows you to remove the air for easy storage. Additional features include no zippers, comfortable strap for crossbody, floats, retains ice for 24 hours, welded seams to prevent leaks and 100% waterproof. Designed from MuleSkinET™ & MuleSkinEV™ for a rugged tough & sturdy material along with PolarLayer™ Insulation which helps keep your contents nice and cold. The ICEMULE Classic™ Large Cooler is perfect for family outings to the game, day hiking or the beach.