FULLY AERO WIND PROTECTION. The Velocissimo Equipe Vest offers high-performance wind protection in a lightweight, aerodynamic package. The windproof and water-resistant Windstopper X-Lite Plus fabric on the front and shoulders keeps the wind off. The back of the vest uses the same fabric that we use on the Aero Race Jersey, so fit is exceptional and close to body, and you don't have any extra fabric flapping in the wind and slowing you down. We built it as an absolutely minimal piece, designed for those training rides or races with changing conditions, so we made it to easily fold up and stash in a jersey pocket.