Wrist Support, Single Strap Style, Ergonomic Support Size S, Fits 5-1/2 to 6-1/2 in, Wrist Ambidextrous, Black, Elastic The wrist guard helps to stabilize the wrist by limiting its movements, both downward and upward. Being lightweight, it will not put any additional stress on your wrist or hand. All supports have a hook-and-loop closure. Its antibacterial lining keeps your wrist and hand dry and comfortable.