The Castelli Perfetto RoS Light Jersey is a beautiful exercise in progressive garment design – offering you protection from the wind and rain but remaining highly breathable. Easily packed into a pocket and ideal on more autumn training rides, this is a real must-have.Bringing the widely lauded Perfetto Light into the Rain or Shine (RoS) family, this new jersey is a remarkable feat of garment innovation. Worrying about potential weather conditions before setting out on a ride will be a thing of the past – simply layer up according to the temperatures expected and enjoy your winter training.The new Gore-Tex Infinium fabric utilised on the front of the Perfetto Light RoS is the result of a dedicated collaboration between Castelli’s R & D team and Gore – offering high-grade water protection.The rear fabric is the tried and trusted Nano Flex Light which has been a staple of Castelli garments for a number of years. In combination, these fabrics offer a thinner alternative to the celebrated Perfetto – ideal if you’re looking for a protective jersey that offers partial protection from the elements but remains cool in moderate conditions.An innovative two-panel pocket design on the rear means that you can easily access essentials even with gloves on – a partial internal divider enables you to store a pump efficiently, again promoting ease of access.This latest evolution of the Perfetto Light offers a significant upgrade on its predecessors owing to its advanced fabric composition – if you’re in need of a new lightweight staple to wear on spring and autumnal training rides, the Perfetto RoS Light is a solid investment.Key Features:Gore-Tex Infinium 203 stretch fabric on front-facing surfaces,Nano Flex Light woven fabric on the rear-facing surfaces,covered YKK Vislon zipper for easy ventilation adjustment,Two rear pockets with integrated pump sleeve for easy access whilst wearing gloves,Dropped-tail for protection from wheel spray,Optimised for 12°C – 20°C.