Feel the beneficial effect of lightweight yet highly functional high-tech underwear. With their moderate compression, the X-Bionic Energizer 4.0 Pants Women fulfil all the wishes of demanding winter sportswomen who want to benefit from outstanding comfort and performance-optimising thermoregulation at the same time. The functional underwear of the X-Bionic 4.0 generation is manufactured on precision machines using the pioneering Retina process. The result is an ultra-dense knitted fabric that integrates 13 highly effective technologies. Functional zones with temperature-regulating and protective effects are precisely positioned and support your performance on cool winter days without making you feel constricted. Thanks to continuous innovation, the legendary, patented 3D Bionic Sphere® system is now further enhanced by ThermoSyphon® technology: complex 3D structures and Y-shaped elements maximise air exchange, cooling when you sweat and warming when you freeze - now faster and more efficiently than ever. Functional zones such as the Innerlap AirConditioning Zone® on the inside of the thighs and Sweat Traps® for the targeted management of excess sweat have a temperature-regulating effect, thereby increasing performance. The ExpansionKnee at the knee joint ensures optimum climate comfort and at the same time offers full freedom of movement.