It Never Gets Easier, You Just Go FasterWe’ve incorporated a lot of our pro racing technology into this all-around performance jersey. The base fabric is a textured 100% polyester that provides excellent wicking to keep you dry in a wide range of conditions. We’ve wrapped our AirMesh fabric around the shoulders and side panels to give extra stretch so the jersey doesn’t constrict or make you look like you should have bought a size larger. The mesh side panels have a Castelli outline print, while the overall graphic stays clean and sophisticated.Key Features: ProSecco GT main body fabric to wick moisture away, Mesh side panels and shoulder stretch zones for great fit, Full-length YKK® Vislon® zipper, 3 rear pockets, Reflective piping, 24°-40°C / 75°-104°F, Weight:139 g.