UA RUSH is infrared technology that reflects your body\'s energy to help you work harder & recover faster|Super-soft ColdGear fabric is breathable & stretches for superior mobility but is still incredibly warm|ColdGear mesh back & side panels provide breathability where you need it without sacrificing warmth|Strategic seam placement to eliminate pressure points & chafing|Mock neck construction for added coverage - Style #: 1366059|Powered by Celliant|Body: 84% Polyester/16% Elastane|Mesh: 82% Polyester/18% Elastane|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