The 400 series Ultra Chiller system is a brand new concept in race personal cooling. It uses water and cubed or shaped ice to circulate cool water in a closed loop cooling system. From extreme offroad to drag racing this system will keep your Ultra Chiller Liquid Cooling Shirt cool and comfortable. The system has 4" internal diameter is either 10" or 16" tall. Includes (1) Center Exit Liquid Cooling Shirt, Stainless steel mounting straps, vented cap 5 foot hose and 12 volt power cord or self contained battery holder.