Controls plantar flexion.  Synthetic removable, washable sheepskin liner. Heel is suspended for maximum pressure relief.  Extended toe support keeps blankets off toes.  Extended lateral support can stabilize leg rotation.   #503170-Sm 3x9.5   #503171-Md 4x11   #503172-Lg 5x12.5   #503174-Extended Toe w/Lateral Support 4x11-Liner replacement codes #503180-S    #503181-M   #503182-L Latex Free UNSPSC#4221706