No wasted energy, only more gains. UA RUSH™ uses a mineral-infused fabric to take the energy you give off when you work and reflect it back into your muscles, increasing blood flow and helping them work harder. As your body emits energy, the mineral-infused fabric absorbs & reflects it back, improving endurance Strategic mesh panels for added breathability Updated ergonomic design keeps seams off high abrasion areas & increases durability Modified raglan sleeve & low profile collar construction Style #: 1358233 Powered by Celliant Body: 84% Polyester/16% Elastane Mesh: 90% Polyester/10% Elastane Imported Compression: Ultra-tight, second-skin fit. 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