The Castelli Men's Free AR 4.1 is an evolution of Castelli's top racing jersey, featuring updated fabrics and an expertly engineered fit. With Castelli's lightweight Velocity dimpled fabric on the front and shoulders, this fabric provides exceptional moisture wicking with outstanding aerodynamics. With the aero race fit, the Free AR 4.1 saves approximately 12 watts at race speed compared to a normal race fit jersey. A full-length YKK® Vislon® zipper features an inner neck protector, offering comfortable customizable ventilation. The Free AR 4.1 is the ideal jersey for every ride, whether going for the win in a sprint, or just hanging on at the local group ride.
Note: Castelli tops and bottoms are designed with a performance cut that often runs smaller than that of other manufacturers. Consider sizing-up one size to ensure a comfortable fit — e.g., if you normally wear a Medium, select a Large in Castelli. Feel free to contact us with any questions or concerns.
- Saves approximately 12 watts at 40 km/h compared to a normal race-fit jersey.
- Velocity dimpled fabric on front and shoulders for improved wicking and faster drying.
- Full-length YKK® Vislon® zipper with neck protector.
- Nervato fabric at armholes for improved aerodynamics.
- Silicone gripper elastic at waist.
- Mesh raw-edge arm grippers.
- Zippered rear pocket.