The X-BIONIC® TWYCE 4.0 have the largest evaporation surface of all X-BIONIC® running shorts. They are designed for running enthusiasts who are active in a warm climate. The patented 3D Bionic Sphere® System with ThermoSyphon® technology provides for an adaptive thermoregulating effect: it cools when you sweat and warms when you’re cold. The new X‐BIONIC® TWYCE 4.0 apparel features a 3D Bionic Sphere® System increased by 200%. By doubling the cooling effect, it relieves the body during activity and helps to stabilize core body temperature at 37° C. As a result, the athlete has more power reserves available for their best performance.