Under Armour Men’s ColdGear Infrared Tactical Fitted Mock

ColdGear Infrared uses a soft, thermo-conductive inner coating to absorb and retain your own body heat
Dual-layer fabric gives you a soft, warm interior and a smooth, fast-drying exterior
4-way stretch fabrication allows greater mobility and maintains shape
Moisture transport system wicks sweat away from the body
Quick-dry fabrications keeps you light and comfortable