Under Armour ColdGear Infrared Evo Fitted Mock Top Dual-layer Fabric - Gives you a soft, warm interior and a smooth, fast-drying exterior. ColdGear Infrared - Uses a soft, thermo-conductive inner coating to absorb and retain your own body heat. Moisture Transport System - Wicks sweat away from the body. Quick-dry Fabrication - Keeps you light and comfortable. Anti-odour Technology - Prevents the growth of odor causing microbes.