The Perfetto RoS Light is the result of a request from the pros, who wanted an equivalent to the Gabba for warmer conditions. The Perfetto Light is more breathable yet is still completely windproof and offers protections in rainy conditions. The short sleeve jersey uses GORE-TEX INFINIUM 203 fabric on the front and sleeves for wind protection, stretch, and breathability. Castellis Nano Flex Light Woven fabric on the back panel lets any excess moisture escape while still providing good water protection. The Perfetto Light closes with a YKK Vislon zipper. The easy action of the zip makes any adjustment for ventilation light work, even whilst flying along. The back of the jersey has a dropped tail to provide some welcome coverage from any road spray and has a large reflective panel to aid visibility in low light. 2 large rear pockets provide ample room for supplies or an extra layer and have an interior pump sleeve. Key Features Castellis lightest short-sleeve wind protection GORE-TEX INFINIUM 203 fabric on front and sleeves for stretch and breathability Nano Flex Light Woven on the back for breathability and good water protection YKK Vislon zipper for easy ventilation adjustment 2 rear pockets with pump sleeve Dropped tail with reflective panel 12 20C / 54 68F Weight: 199g (Large)