Under Armour Billboard Reversible Beanie Black/Steel Medium Heather/Pitch Gray

ColdGear
UA Cold Gear uses a two layer microfiber. One layer is the classic satin exterior "polyarmour", the other is a less smooth "brushed" fiber. The latter quickly wicks sweat from the skin and keeps the body warm and dry without weighing it down. The body temperature remains constant, thus avoiding cold shocks that could generate muscle injuries of various kinds.