Dual-layer performance that conquers the cold. The men's UA Game Day ColdGear Compression Mock is built with a dual-layer construction for extra protection against the cold. A soft brush interior circulates body heat to keep you warm. And it's got a slick exterior to protect you from the elements. The UA Game Day ColdGear Compression Mock also wicks moisture to keep sweat from weighing you down on the field, or giving you a chill on the sideline. But most importantly, this shirt feels awesome on. Its super smooth four-way stretch construction moves with you giving you a second skin fit that's packed with signature UA performance.