The class-leading aero jersey our pros use day in and day out for racing and training.CFD-based fabric placement and seam construction.Engineered for aero efficiency at 30 to 55 km/h.Airflow shoulder construction.Velocity Rev2 fabric on front and sleeve.3D mesh back for breathability.Elbow-length stretch sleeves with raw-cut edge.YKK® Vislon® zipper.Drop tail allows perfect pocket placement while keeping jersey fitting well at waist.3 rear pockets.