Treat yourself to carefree winter sports days with the whole family. The X-BIONIC® INVENT® 4.0 PATRIOT SHIRT SWITZERLAND JUNIOR offers reliable thermal protection for young athletes on any terrain. The new 4.0 generation is the first to feature the Retina® ultra-high definition quality for unique accuracy of functionality. The exceptionally dense material is knitted on precision machines. Functional zones are seamlessly integrated and can act with pinpoint accuracy. The functional underwear has excellent insulating properties thanks to its roughened inner surface, is made of skin-friendly material and allows unrestricted freedom of movement. The legendary 3D Bionic Sphere® system ensures optimum thermoregulation of the chest and back with proven effectiveness. Sweat Traps® prevent sweat channels and additionally support the cooling effect. Technologies such as the Air-Conditionig Channel® and the Air Guides® are also responsible for temperature-controlled ventilation. The stabilizing a