The castelli fawesome 2 vest offers a high performance blend of wind and water protection in a lightweight aerodynamic package castelli have obsessed over the fit to the point that itrsquos nearly as aero as their aero race jersey the windproof and water resistant windstopperreg x lite plus fabric on the front and shoulders keeps the wind off other features include a high collar to keep the wind out when descending velocity fabric on the back of the vest for tem