Castelli Fawesome Vest: The Fawesome vest is another Innovation created at the requests of Cervelo Test Team Rider Gabriel Rasch. Starting with the Classic Aero Race Vest, Castelli added Winstopper X-Lite Plus to the front to enhance the stretch and breathability characteristics with the just the right weight for optimum warmth. Great attention has also been paid to the fit; it is now almost as aerodynamic as the Aero Race Jersey for efficiency in high winds. A splash guard on the back is included to protect your lower back when roads are wet.