Run faster, better and longer. Increase your performance with the X-BIONIC® TWYCE® 4.0 RUNNING SHIRT LONG SLEEVE WOMEN. The new 4.0 generation is the first to feature the Retina® ultra-high definition quality for unique accuracy of functionality. You can feel the difference in the highly effective density, the intensive functional transmission and the precisely defined functional zones. Your advantage: extremely high-performance skin-climate management thanks to the legendary patented 3D Bionic Sphere® System with ThermoSyphon® technology, which is more powerful than ever and has been doubled in size. Its latest developmental stage maximizes air exchange through 3D structures and Y-shaped elements. It cools when you sweat and warms when you're cold. This helps ambitious women runners stay in the optimal performance range for longer. Secure support is provided by the new Ideo-Waistband, which has ergonomically optimized tailoring with a higher line in the back. Also new and optimized specifically for running are the forearm area and the comfortable collar, which promotes constant air exchange.