Our UA Hg Armour Ls is the perfect performance baselayer for athletes. It is crafted with HeatGear® fabric that provides superior sweat-wicking and quick-drying capabilities, while UPF 30 protection shields the skin from the sun. The 4-way stretch construction and mesh underarm panels offer strategic ventilation and maximum mobility. Stay cool and comfortable all day in our UA Hg Armour Ls.