Extra Sound features Wider section Wider outside heel Offers more cover & support Radius clip Hind shoe left/right pattern Hind shoe also available ¼ clipped; This is the worlds First drop forged plate that has the hind shoe in a left and right pattern. The outside branch is a little longer than the inside branch; and the outside branch is wider from the quarterback. The outside heel is wider to give the foot more cover and support. The inside branch is bevelled to reduce the risk of brushing and has a tapered inside heel for close fitting.