IT NEVER GETS EASIER, YOU JUST GO FASTER. Weve 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. Weve wrapped our AirMesh fabric around the shoulders and down into the sleeves and side panels to give extra stretch so the jersey doesnt 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.