The best training top when the cold weather arrives. UA ColdGear® helps you keep you and your core warm, dry, and light with a brushed inner face that traps warmth. Meanwhile ColdGear®'s moisture transport system ensures that perspiration quickly moves away from your body so that you stay dry and comfortable. Ideal use: Temperatures under 55 degrees F. ColdGear® features a double-sided fabric that wicks moisture from the skin and circulates body heat. It accomplishes the impossible by keeping athletes warm without weighing them down. Also, just because it's cold doesn't mean the sun can't harm you, UA ColdGear® features ultraviolet protection protects your skin from the sun's harmful rays and inhibits premature aging. Under Armour's Trademark performance fit. These products fit snugly to the body providing a close, lean, and supportive fit.