'Cool Shirt Pro Air and Water System - Used by drivers at all levels of racing, this system promises the ultimate in driver cooling comfort. Provides Temperature Controlled Water Cooled To The Driver's Cooling Jacket And Cooled Leaked Hair To The Helmet. 2.5 Meters of Water Hose with Dual Automatic/Quick Closure Disconnects Attach the Jacket to the Unit, and the Dual Temperature Control Switch Allows the User to Regulate Air and Water Flow for Personal Comforts Based on Temperature Variation External. Cooling Time: 4H