Got a cold-weather race coming up? The women’s Craft Active Extreme X RN SS has your back. Craft designed this baselayer for racing or other high-output activities in the cold. Polyester fibers help regulate your body temperature, while the waffle knit design helps move sweat away from your skin. With added stretch and a contoured fit, the women’s Active Extreme X RN SS keeps you comfortable while you push the pace.