The high-tech functional underwear for winter athletes integrates a variety of thermal-regulating and protective functional zones in all climatic conditions. The patented 3D Bionic Sphere system with ThermoSyphon technology maximizes air exchange, cool when you sweat and warm when you freeze. Patented in 29 countries. Functional zones such as the Innerlap AirConditioning Zone on the inside of the thighs and the ISO CalfPad in the calf area act temperature-regulating and thus increase performance. Manufactured using precision machines using ultra high resolution Retina technology. In the ultra-dense knit, intelligent functional zones can be positioned even more precisely for a targeted effect. 100% research, development, design and communication in Switzerland. Made in Italy. Over 600 awards and test victories, over 800 patent applications for X-BIONIC worldwide.