Conquer the peaks of ambitious competitive sport with the new X-BIONIC® ENERGY ACCUMULATOR 4.0 TRANSMISSION LAYER JACKET MEN. Rely on the latest technology at the highest level to boost your performance and endurance in all climatic conditions. The new 4.0 generation is the first to feature the Retina® ultra-high definition quality for unique accuracy of functionality. For a targeted effect, intelligent functional zones are positioned even more precisely in the ultra dense knitted fabric. This high-tech transmission layer with a tighter fit and full zip for ambitious winter sports athletes integrates a variety of thermoregulatory and protective features. The legendary patented 3D Bionic Sphere® System with ThermoSyphon® technology is more powerful than ever and is active on the chest and back: Complex 3D structures and Y-shaped elements maximize air exchange, cool when you sweat, and warm when you are cold - now faster and more efficient than ever. Functional zones such as the Air-Conditionig Channel® and the AirComPlex-Zone at the upper abdomen, as well as ISO-Shoulder and Sweat Traps® under the arm, are also performance-enhancing thermoregulating technologies. Expansion Ribs® at the elbows ensure optimum climate comfort and at the same time offer full freedom of movement. Partialkompression® supports the performance-enhancing effect while improving blood flow for optimal cooling.