92% Polyester, 8% Spandex Drawstring closure Slim fit for a tailored feel Nike Therma-FIT technology helps manage your body’s natural heat to help keep you warm in cold-weather conditions. It combines brushed-back knit fabric and stretchy side panels to help you move freely through your stride. Zippered pockets at the side seams help secure your essentials. A mid-rise, elastic waistband with a drawcord lets you adjust your fit.