Windstopper. X-Lite Plus on front and shoulders provides lightweight wind protection Velocity fabric on back for stretch and temperature regulation Heat transfer at back protects from wheel spray Packable construction, weighs only 149 grams Full-length YKK. Vislon zipper Rear reflective trim at hem and waist give you 360-degree visibility ANOTHER GABBA-INSPIRED PRODUCT Another product resulting from the partnership with Team Garmin-Cervelo. The Fawesome Vest offers a high-performance blend of wind and water protection in a lightweight, aerodynamic package. Castelli has obsessed over the fit to the point that it's nearly as aero as our Aero Race Jersey. The windproof and water-resistant Windstopper 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 temperature regulation, and a lower-back splash guard to protect from wheel spray. Rear reflective tabs and trim at hem provide increased visibility in low-light conditions.