CASTELLI AERO RACE 4.1 SOLID JERSEY FZWhen you're riding, it is best to wear clothing that is breathable and can wick moisture away so you can stay dry and cool. The Castelli Aero Race 4.1 Solid Jersey FZ is a jersey that offers a great fit, is comfortable and provides great moisture management. It saves approximately 12 watts at 40km/g compared to a normal race-fit jersey. It has velocity dimpled fabric on the front and shoulders that improves wicking and dries faster. The full-length YKK Vislon zipper with a neck protector provides extra ventilation when it gets warm outside. The Aero Race 4.1 Solid also features silicone gripper elastic at the waist, mesh raw-edge arm grippers, the classic three rear pockets so you can store your riding essentials and a zippered pocket, and reflective heat-transfer viz strips to keep you visible in low-light.FeaturesAerodynamic fabric saves approximately 12 watts at 40 km/h compared to a normal race-fit jerseyVelocity dimpled fabric on the front and shoulders improves wicking and dryingClassic three rear pockets with a zippered pocketSizingSizeSmallMediumLargeExtra LargeXX LargeChest36"37.8"39"41"43"Waist31"33"34.6"36.6"38.5"Castelli Sizing InfoCastelli products are aggressively cut and are meant to fit optimally in the riding position. If you are in-between sizes, you may want to size up as the fit may be very form fitting. If you have questions, please contact our Gear Advisors. | Castelli Aero Race 4.1 Solid Jersey Fz Men's Size Medium in Anthracite