Designed with a wider foot bed for increased stability and a soft nylon/foam liner with no seams in critical post-surgical areas. Low profile, rocker bottom cushioned outer sole for shock absorption. Ideal for replacement of total contact casting; treatment of pre-ulcerative or ulcerative conditions of the plantar surface of the foot. Medium: For women's shoe size 4½ - 6½ , men's, 5½ - 10.