The Under Armour Men's ColdGear Infrared Tactical Fitted Mock Neck is the perfect shirt for staying warm and comfortable in cold weather. Made with UA's signature ColdGear Infrared technology, this shirt traps your body heat to keep you warm, even in the coldest conditions. The fitted design provides a comfortable and streamlined fit, while the mock neck helps to keep the cold out. This shirt is perfect for a variety of activities, including hunting, fishing, hiking, and camping. It's also great for wearing to work or around the house on cold days.