Under Armour® offers a distinct line of microfiber performance base layer garments that feature Under Armour’s exclusive combination of moisture wicking fabrics. ColdGear by Under Armour, is designed to keep you warm, dry, and light. It wicks moisture away from your skin and circulates your body heat. It’s perfect for temperatures under 55 degrees F. Cold Gear accomplishes the impossible, by keeping you warm without weighing you down.