Castelli superleggera jacketcastellis superleggera jacket is extremely packable lightweight and great to have close by in case of a sudden rain shower this jacket will keep the worst of the rain and wind off you when needed due to its pertex quantum base fabric and stretch torrent waterproof fabric reflective trim and cross wrap cuffswhen the rain stops and it starts to get too hot to wear you can store it in your pocket backpack or saddle bag the superleggera jacket also features an ykk