Team Cannondale Garmin needs an ultralight jersey for tough mountain stages but can't afford to sacrifice aerodynamics. The Castelli Climber's 2. 0 Jersey addresses this problem with fabrics and an aerodynamic cut that keep the jersey comfortable during tough climbs, and at the same time aero for quick descents and the inevitable headwind. The jersey is made with the same panel design as the Aero Race jerseys to reduce drag. Not only is the 2. 0 sleek, but the fabrics keep it cool, breathable, and lightweight, so it's as well suited to days in the mountains as it is to long pulls across the valley floor. The jersey's rear panel is StradaPro 3D polyester which provides structural stability for the three rear pockets and light sun protection for your skin while the lightweight and quick drying Flusso 3D on the front and shoulders transfers moisture and breathes like it has its own lungs. The full length zipper provides even more ventilation options, while the mesh arm grippers provide a slim, drag free fit without trapping heat.