SWIX Radiant RaceX SS is a short sleeve training top version of our award-winning super stretchy and lightweigh tech-bodywear; rated “best there is” for the highest intensity cardio-sport in the world. Now made with radiant color paneling and added reflectives, hence the name. Thus; highly suitable for use in urban environments. Needless to say that it offers wicking moisture management and quick dry properties to regulate your body temperature adjusting to your activity level.