Use the Castelli Perfetto RoS Women’s Vest as your race vest and you will feel the difference without any noticeable extra weight. The Perfetto blocks chilly wind, repels light rain and evaporates sweat. All of these qualities are combined in a race-light cycling vest that can be easily removed by unzipping the front and folding it into a small package that you can store in a jersey pocket. The Gore-Tex Infinium 205 has just the right amount of stretch so the vest fits well without restricting movement. The fleece-lined water-resistant construction on the front and lighter, more stretchy Nano Flex Light Woven fabric on the back provide everything you need to stay comfortable in uncomfortable weather.