UA RUSH™ powers your toughest workouts, your biggest games, your most intense training. It gives you back energy, fits great, keeps you dry, and makes you feel like you can crush every PR. UA RUSH™ is infrared technology that reflects your body's energy to help you work harder & recover faster Material wicks sweat & dries really fast 4-way stretch material moves better in every direction Classic racerback construction & cropped body length Style #: 1373313 Powered by Celliant 91% Polyester/9% Elastane Imported Loose: Fuller cut for complete comfort.