Breathable, ergonomic, comfortable: This is what the UYN EvolutyOn Underwear Shirt Longsleeve Turtleneck made from Natex, a nylon fiber that is 100 percent biologically based, stands for, providing ideal climate management. Coolvent allows for a constant airflow, with channels running through the inner surface. This way, the shirt absorbs sweat and cools during movement. With its innovative arm and shoulder construction, Hypermotion – made from a single piece and therefore seamless – it also guarantees maximum freedom of movement for athletes and supports correct posture. The long sleeve with a stand-up collar is particularly suitable for sweaty, intense sessions, especially in the fall or on warmer winter days.