art. nr.: in-wt06s23m-g035-sfeel the benefits of innovative functional underwear even at a moderate activity level. with the x-bionic® invent® 4.0 shirt long sleeve men you benefit from a significant performance boost right from your first steps into the world of winter sports. the new 4.0 generation is the first to feature the retina® ultra-high definition quality for unique accuracy of functionality.the functional underwear is designed for men who wish light compression and effective thermoregulation for a moderate level of activity. thanks to technologically innovative production on precision machines the functional zones are seamlessly integrated in the exceptionally dense material and can act with pinpoint precision.the legendary 3d bionic sphere® system ensures optimum thermoregulation of the chest and back with proven effectiveness. it cools when you sweat and warms when you are cold. sweat traps® prevent sweat gutters and additionally support the cooling effect.technologies such as the air-conditioning channel® and the air guides®are responsible for temperature-controlling ventilation. the stabilizing and balance-promoting proprio-padding, but also the perfect fit thanks to the aktiv-bund and ideo-waistband, reinforce the performance-promoting wearing comfort.materialstechnical composition skin nodor® (94%) mythlan® (3%) elastane (3%)material composition polyamide (94%) polypropylene (3%) elastane (3%)