FEATURES of the Under Armour Men’s UA ColdGear Infrared Raid Long Sleeve Tee Dual-layer, textured-grid fabric traps heat for warmth with very little weight ColdGear infrared technology uses a soft, thermo-conductive inner coating to absorb and retain your own body heat Moisture transport system wicks sweat and dries fast Anti-odor technology prevents the growth of odor causing microbes