Men&#39;s t-shirt by Under Armour.<br />-&nbsp;ColdGear Infrared technology uses a soft, thermally conductive inner layer to absorb and retain your body heat<br />- Two-layer fabric with an ultra-warm, brushy interior and a soft, quick-drying exterior<br />- Four-way stretch material moves better in every direction<br />- The material is great for wicking away sweat and dries very quickly