For premium comfort that will never go out of style, you can’t go wrong with the Under Armour Borderland Flannel Shirt. Soft, brushed flannel fabric – a 60% cotton, 40% polyester blend – wicks moisture away from the skin to keep you from getting overheated. This classic ColdGear shirt features a classic spread collar, buttoned front placket, button-adjustable cuffs, and a spacious patch pocket at the left chest. Loose fit. Imported.