The Castelli Perfetto RoS 2 Vest has been designed with perfection in mind.Castelli's team wanted a light vest that would pack down easily into a pocket, allowing it to be taken on any ride 'just in case'. However, they also wanted it to also to be sturdy enough to resist splashes and provide warmth and wind protection, all while letting sweat escape.The Perfetto RoS 2 Vest is composed from a mixture of GORE-TEX INFINIUM™ WINDSTOPPER® 203 Stretch fabric at the front and sleeves, offering windproofing and stretch with breathability, and similarly stretchy Nano Flex fabric at the back, which is water repellent and lets in just enough wind for you to stay dry, without getting cold.It offer a close fit, with a collar to keep your neck warm, along with 360 visibility thanks to a reflective band below the pockets and another around the arm holes. It has been improved from its original design with an extra pocket and a two-way zip that can be used to adjust the vest's ventilation on the fly.Compact and light enough to carry, this smart vest will keep you warm on a cool day when the wind picks up unexpectantly or the roads are throwing up spray. Perfection indeed!Features:Castelli's take on the perfect cycling vestRain or Shine categorisation indicates wet weather protection is paired with breathabilityLight, wind repellent and breathable GORE-TEX INFINIUM™ WINDSTOPPER® 203 at the front and sleevesStretchy, lightly water-repellent Nano Flex Light Woven fabric at the backCovered, smooth-running YKK® Vislon® zipper opens from the top or bottom3 roomy rear pockets for improved storage, with a reflective panel at the bottomFurther reflective accents around the armholesWeighs 151g (large size)For use at temperatures from 12-20C, 54-68F