With the X-BIONIC® INVENT 4.0 RUN SPEED SHIRT WOMEN, winning on any running course becomes effortless. This weight-optimized model from the X-BIONIC® 4.0 generation is a powerful high-tech pioneer for ambitious female runners and features the advantages of Retina® Ultra-High-Definition manufacturing technology. The 3D Bionic Sphere® System contributes significantly to constant climate regulation with its form-optimized surface in the chest area and an extended zone in the back area. Enlarged Sweat Traps® balance the temperature through targeted evaporation, and the integrated kidney ribs in the dense knit simultaneously isolate the sensitive kidney and pelvic area. The higher cut waistband with IDEO waistband and the Shoulder-Flex zone in the shoulder area are part of the highly elastic material structures that maintain shape with every movement and prevent skin irritations from annoying chafing.