The Under Armour ColdGearŽ Infrared EVO Mock is perfect to wear alone or as an under layer. ColdGear Infared is a soft, thermo-conductive coating on the inner layer that absorbs and retains your body heat, so you stay warmer, longer. Dual-layers give you a soft, warm interior and a fast-drying exterior. Four-way stretch allows greater mobility and maintains its shape. Signature Moisture Transport System wicks sweat away from the body to keep you cool and dry. Anti-odor technology prevents the growth of odor causing microbes to maintain freshness. Smooth, chafe-free flatlock seam construction adds comfort. ColdGear works best in weather between 0 and 55 degrees. 87% polyester/13% spandex. Imported.