Lighter and faster than ever, the Castelli Climber's 2.0 FZ Jersey is designed for all conditions, thanks to its quick-drying properties, and patterned after Castelli's Aero Race 5.1 FZ Jersey for increased aerodynamics. It even has the same wind tunnel results as Castelli's Aero Race 5.0 Jersey -- just 2 watts slower then the updated 2016 Aero Race 5.1 FZ Jersey, the most aero jersey in Castelli's lineup! Flusso 3D fabric on front and shoulders is extremely cool, light and fast-wicking while the StradaPro 3D fabric in back supports fully loaded pockets and has UPF 16 to filter 93% of damaging UV rays. Mesh raw-edge arm grippers provide gentle compression and a clean finish. Worn by Team Cannondale-Garmin and MTN-Qhubeka with a different graphic.