X-BIONIC Twyce Run: Bring the trail to life – but stay cool while doing it. The X-BIONIC TWYCE RUN SHORT SLEEVE SHIRT is a summer base layer for passionate runners and trail runners who cannot be stopped even on hot days. Thanks to the Y-shaped Twyce Cool Zones, sweat traps, and the innovative 3D Bionic Sphere System with ThermoSyphon structure, air can circulate freely. Enjoy the feeling of optimal temperature regulation for your body. The functional fibers transport moisture away from the skin, allowing it to evaporate quickly so you can stay cool in any situation. Innovative functional zones enhance ventilation and let your skin breathe where it's most needed. With its regular fit without additional compression, the Twyce Run series is not only high-performing but also comfortable. However, if you are looking for a competition-oriented shirt, then check out our Twyce Race products.