Check the listing for details. K1 RaceGear 17-CSV-W-M Cool Max Vented Undershirt, White. Condition: New. Listed at 55.00 USD. The CoolMax vented shirt is ideal for racers, as CoolMax clothing helps keep the body dry by wicking moisture away. If you race karts or racecars, you know firsthand how wearing a racing suit can result in perspiration on the racetrack. With a CoolMax shirt, you can stay dry, cool, and comfortable out on the track, meaning you can pay less attention to your discomfort, and more attention to your driving! Vented For Maximum Breathability. Easy Machine Washable. Moisture Wicking.