With the Invent 4.0 Shirt Round Neck Men from X-Bionic, you will benefit from a significant performance boost right from your first steps into the world of winter sports. The X-Bionic 4.0 generation of functional underwear is designed for men who want light compression and effective thermoregulation for a moderate level of activity. This shirt is made from an exceptionally dense material in which the functional zones are seamlessly integrated and work with pinpoint accuracy. The 3D Bionic Sphere System ensures optimum thermoregulation on the chest and back with proven effectiveness. Sweat traps prevent perspiration channels and additionally support the cooling effect. And technologies such as the Air-Conditionig Channel and the Air Guides are also responsible for temperature-regulating ventilation.