Under Armour ColdGear Tactical infrared fitted mock long-sleeved shirt. Style# 1244393 NWT Olive green Medium see size chart;pictured Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior ColdGear® Infrared technology uses a soft, thermo-conductive coating to absorb & retain your body heat Material wicks sweat & dries really fast 4-way stretch material moves better in every direction