The TWYCE Cool Zone distributes sweat over an area 200% larger than any of X-Bionics' other functional sports shirts for the highest possible evaporative cooling effect. The new ThermoSyphon® technology further improves thermoregulation thanks to a complex system of twisted tunnels and channels. Thus, the body's ideal core temperature of 37ºC is maintained. ThermoSyphon increases the stability of the shirt even when the athlete is in motion. Additionally, the Flexor Armbund and IDEO-Waistband enhance the ergonomics of the shirt. These features increase the rider's range of motion and comfort while reducing draft and drag.