X BIONIC Energy Accumulator 4.0 Shirt Round Neck Long Sleeves Men Baselayer Functional Sport T Charcoal/Yellow, Large

The high-tech functional underwear For enthusiastic winter sports athletes integrates a variety of Thermoregulatory and protective functional zones The functional underwear Is manufactured on precision machines using the pioneering Retina process. The result is an ultra-dense knitted fabric that integrates 13 highly effective technologies The legendary patented 3D Bionic Sphere System with thermosiphon technology is more powerful than ever: cool when you sweat, and warm when you are cold The Air-conditioning Channel and the air complex-zone at the upper abdomen, as well as ISO-Shoulder and sweat traps under the arm, are also performance-enhancing thermoregulation technologies 100% research, development, design and communication done in Switzerland. More than 600 awards and test Wins, over 800 patent registrations worldwide for the brand with the "X"