It made its debut at the Paralympic Games in 1976 and at the Guadalajara 2011 Parapan American Games. All Para athletes wear eyeshades so that athletes of different degrees of vision can compete together.
Two teams of three face off on an indoor court with tactile lines and goals at either end. The ball has bells in it. Players can block the shots by using their whole bodies. Spectators must be quiet during the game so that players can hear the ball.