Under Armour Men's Expanse ColdGear Infrared Long Sleeve Casual Shirt - ColdGear Infrared technology holds in body heat, without adding weight or bulk. It's a special, soft print on the inside and it keeps you warmer, longer, so you can work out in the bitter cold. Sport activity recommendation: outdoor sports & training Weather conditions: cold temperatures ColdGear Infrared lining uses a soft, thermo-conductive inner coating to absorb & retain body heat Material wicks sweat & dries really fast 4-way stretch material moves better in every direction Odor control technology minimizes odor 3-button front placket Style: 6005033