Castelli pave jacket is castellis excerise in reducing the rain jacket to the bare minimum you need a high performance fabric so theyve worked with event to make a lighter version of what theyre already suppling to some worldtour teams castelli cut it close to the body to minimize flapping fabric and to improve aerodynamics then castelli tape the seams to make it fully waterproof and gave it a waterproof ykk zipper after all that castelli stopped exclusive event ultralight microfibre fa