The new 4.0 generation is the first to offer Retina® Ultra-High-Definition quality for unique functional accuracy. The result is an ultra-dense knit that integrates 13 highly effective technologies. The patented 3D Bionic Sphere® System with ThermoSyphon® technology is more powerful than ever and works on the chest: A 40 cm² large sweat-absorbing surface, along with complex 3D structures and Y-shaped elements, maximizes air exchange. Technologies such as the AirComPlex zone on the upper abdomen and the Air-Conditioning Channel® with surrounding Air Guides® support temperature-regulating ventilation beneath a second layer of clothing. The X-Impact Technology enhances the oxygen and nutrient supply to the muscles, thereby promoting enduring performance.