The secret to suiting up for those cold weather rides? Versatility. 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.