UA RUSH is infrared technology that reflects your body\'s energy to help you work harder & recover faster|Super-soft ColdGear fabric on back & sleeves is breathable & stretches for superior mobility|Diamond-textured fabric on front with brushed interior for added warmth & comfort|Mock neck construction for added coverage|Built-in thumbholes help keep sleeves in place & trap heat|Ribbed collar, cuffs & bottom hem - Style #: 1366168|Powered by Celliant|Back Body/Sleeves: 84% Polyester/16% Elastane|Front Body: 78% Polyester/22% Elastarell|Imported - 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