The Aero Race 7.0 Jersey is Castelli’s fastest race jersey. Pro racers have been winning UCI stages races in Castelli’s Aero Race Jersey since 2006 when Castelli introduced the first aero jersey designed for road races. Prior to 2006, aero clothing was only for TTs. For road racing, the only focus was creating a jersey that kept you dry. Castelli the company that has been designing performance cycling clothing for more than a century wanted to up-the-game. After rigorous rider feedback and wind tunnel testing, Castelli designed the first Aero Race Jersey that proved substantial speed gains in road races. Almost 20 years later, all the pro racers now race in skintight race jerseys, the trend that had been started by Castelli’s first Aero Race Jersey. On the seventh addition, the Aero Race 7.0 Jersey is even more aero, yet comfortable enough for all-day training rides. Engineers know that comfort supports a cyclist’s performance. Using racer feedback, Castelli created an aero design with an exquisitely soft fabric that fits perfectly without restricting movement. Airflow shoulder construction with elbow-length sleeves and raw-cut edge provides a streamline surface for airflow. Stretchy side fabrics guarantee an exact fit as a racer shifts position on a bike. Full elastic and gripper around waist flatten three rear pockets that provide food storage without compromising aerodynamics. Besides aerodynamics, the highly breathable fabric stays dry from body moisture, and it helps keep a racer from overheating in warm race day weather. By adding the Bolero Short Sleeve Base Layer, a racer gains an additional 6% aero design advantage.