Stay warm in cold weather with the men's Craft Active Extreme X CN LS. This long-sleeve baselayer uses polyester fibers to regulate body temperature during chilly workouts or cold weather races. Stretchy fabric and a contoured fit ensure freedom of movement when your PR is on the line. Finished with body-mapped mesh panels to vent excess heat, the men's Craft Active Extreme X CN LS will be a favorite in your cold-weather running kit.