Under Armour Men ColdGear Infrared Evo Printed Fitted Crew Shirt 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. Quick-dry fabrication keeps you light and comfortable. Anti-odor technology prevents the growth of odor causing microbes. Smooth, chafe-free flatlock seam construction. Polyester/Elastane.