Under Armour Rush quarter Zip Top Mens. UA RUSH™ is infrared technology that reflects your body's energy to help you work harder & recover smarter. Soft knit fabric with engineered mesh ventilation, mapped to the places you need it most. Nearly sew-free design to eliminate chafing. 4-way stretch material moves better in every direction. Material wicks sweat & dries really fast. Powered by CELLIANT®. 52% Nylon/48% Polyester. Imported. Wash garment inside out. 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.