The Aero Vest is a highly technical wind vest with full stretch to provide core protection from wind and rain without flapping or excess materialSoftshell Lite fabric provides optimal wind and water protectionFull-length internal draft flap with zipper garage seals in warmth360 degree reflectivityCollar tapers from front to back for on-bike ergonomicsForm FitWeather Forecast: Cool and CloudyTemperature rating 15 degreesFabric: Body: 100% polyesterWeight:110 grams [size medium]