Whether you race karts or racecars, a CoolMax balaclava vented headsock can help keep your head cool and dry. At K1 Race Gear, K1 know firsthand what it's like to have your helmet on for a long stint at the track, which is why K1 is pleased to offer K1 Race Gear's customers the CoolMax Vented Balaclava headsock. The fibers used in CoolMax clothing are specially designed to draw moisture away from the body and allow air circulation for quick evaporation. A CoolMax balaclava can not only keep your head cool and dry, but it helps keep the inside of your helmet clean as well.. Vented For Maximum Breathability * Easy Machine Washable * Fabric Pulls Moisture away from skin