UA RUSHTM is infrared technology that reflects your body's energy to help you work harder & recover smarter. Material wicks sweat & dries really fast. Jacquard mesh shoulder panels for added ventilation. Dropped, shaped hem. Odor control technology minimizes odor. Powered by Celliant. Body: 80% Polyester/20% Elastane. Mesh: 57% Polyester/33% Elasterell/10% Elastane. Machine wash cold with like colors. Use only non-chlorine bleach when needed. Tumble dry low. Do not iron. Do not use softeners. Do not dry clean.