The better the skin climate, the higher the well-being, and the more fun sports become. This is achieved only with genuine functional clothing with proven effectiveness and patented features. That is why women choose the X-BIONIC® INVENT® 4.0 LIGHT SHIRT ROUND NECK WOMEN. The integrated, patented, and award-winning 3D Bionic Sphere® System cools when you sweat and warms when it's cold. Its intelligent regulation function reduces the risk of overheating. Wear it while running, cycling, trekking, or any other sporting activity in warmer temperatures. Comfortably close to the body and with a advantageously thin structure, this shirt can be worn under your sports clothing without being uncomfortably bulky. It provides exactly what you need: the cooling effect you desire on warm days.