The most aerodynamic. This top is designed for all-day comfort, with excellent moisture regulation, a comfortable fit and three spacious pockets. Fabrics, placement of cuts and seams based on engineering studies through computer simulations. Developed to achieve maximum aerodynamic efficiency at speeds between 30 and 55 km/h. Aerodynamic shoulder construction. Velocity Rev2 fabric on the front and sleeves. 3D mesh back Elbow length sleeves with raw cut. YKK Vislon zip The inner elastic waistband is placed before the end of the pockets and keeps them tight to the body.