Like new, no flaws. Size S. Black. Warm and lightweight, our Women's Prime Alpha Vest is an easy layer to have on hand to block the chill. Polartec® Alpha® insulation keeps you warm when temperatures drop, while moisture-wicking shell fabric moves sweat away from your body as you start to heat up. The slightly stretchy build fits comfortably over a long sleeve jersey or jacket so you can wear this cycling vest ride after ride, all season long.