When the temperature starts to drop that doesn't mean you have to suffer, especially when sporting the Under Armour Sideliner Beanie. Created from 100% acrylic (87% polyester and 13% elastane on the inner), this hat ensures you stay warm, dry and light whether active or not. As a special fabric feature, the exclusive synthetic microfiber delivers 53% less weight as you sweat. A plain black design features a grey inner lining and the Under Armour logo stitched in grey onto the outside.