Amazing ColdGear Infrared technology built into a game changing crew, the Under Armour Women's UA ColdGear Infrared EVO Crew is perfect for layering for extra warmth. Inspired by stealth bombers, ColdGear Infrared uses a light and flexible ceramic material that absorbs body heat to keep you noticeably warmer, longer than any normal crew. Its the perfect combo of technology and style. 7.2 oz. 87% polyester13% elastane fabric. EVO ColdGear fabric for warmth and moisture management. ColdGear Infrared printed interior uses a soft, thermo conductive inner coating to absorb and retain your own body heat. Quick dry for superior moisture transport to keep you cool, dry and comfortable. Lightweight, 4 way stretch construction improves mobility and maintains shape. ArmourBlock anti microbial technology keeps your gear smelling fresher, longer. Unique flatlock seaming details prevent chafing. Fitted to be contoured to the body without the constriction of compression. Import.