WHAT IT IS / PRODUCT FEATURESMade to be the perfect vest. GORE-TEX INFINIUM™ WINDSTOPPER® wind and water protection on the front and breathable nano defect repellent technology on the back. Elasticated fit and can be packed into a mid-pocket if needed. This is an essential piece for your cycling wardrobe. The ultimate racing or training vest with a wind-resistant front and breathable, moisture-wicking back.GORE-TEX INFINIUM™ WINDSTOPPER® 203 lightweight stretch fabric on the front.Woven Nano Flex Light on the back is stretchy and breathable with good water protection.Two-way YKK® Vislon® zipper for easy on-the-go ventilation adjustment.3 Reflective piping on the bottom of the pockets and around the hand openings.Colours: 085 light black, 363 green tea, 414 dark blue, 883 melonSizes: XS - XLWeight: 146g. (S)Temperature range: 10 - 18 ˚C Material composition:Hlavnuter outer material 100% polyester Main inner material 92%polyester 8%elastaneBack piece, pocket, sides 78%polyester 22%elastaneInner collar 90%polyester 10%elastane The Perfetto RoS 2 vest is our attempt at the perfect vest.It's warm, windproof and breathable at the same time, thanks to CASTELLI's exclusive GORE-TEX INFINIUM™ WINDSTOPPER® fabric on the front and Nano Flex stretch woven material on the back. It's resistant to splashes from wet roads or changing weather conditions. Lightweight and packable, it fits easily into a jersey pocket. It has three custom back pockets and a two-way YKK® Vislon® zipper that you can also open from the bottom to access the gear in the jersey pockets. It has 360° visibility, thanks to the reflective piping on the pockets o the armholes. It has a body-hugging fit with a very comfortable high collar that is ideal for colder conditions.