Stay covered, cool, and extra visible in these lightweight men's running tights. Reflective details in key motion zones keep you recognized as a runner in motion. 3M™ Scotchlite™ Carbon Black Stretch reflectivity placed in critical motion zones helps drivers recognize you as a runner in motion. A secure zipper pocket at the back keeps your cards, keys,or phone close while reducing bounce. High breathability and supreme stretch make this tight afavorite among Brooks elite athletes. DriLayer® 77% nylon/23% spandex