Make it easy for yourself to win on any running course with the X-Bionic Invent 4.0 Run Speed Shirt Women. The weight-optimised model of the X-Bionic 4.0 generation is a high-performance high-tech pioneer for ambitious female runners with the benefits of Retina ultra-high definition manufacturing technology. With a shape-optimised area on the chest and an extended zone on the back, the 3D Bionic Sphere System plays a decisive role in constant climate regulation. Enlarged sweat traps equalise the temperature through targeted evaporation, and the kidney ribs integrated into the dense knit simultaneously insulate the sensitive kidney and pelvic area. For even more well-being on long runs, the innovative cut offers maximum comfort: the higher-cut waistband with Ideo Waistband and the Shoulder Flex zone in the shoulder area are part of the highly elasticated material structures that stay in shape with every movement and prevent skin irritation caused by annoying chafing.