About the Castelli Entrata V Jersey Castelli have incorporated a lot of their 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. They have wrapped their AirMesh fabric around the shoulders and down into the sleeves 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 > Sublimated stretch mesh with raw-cut edges at sleeve endings > Mesh side panels and shoulder stretch zones for great fit > Full-length YKK® Vislon® zipper > 3 rear pockets > Reflective piping for added visibility