A device designed for lower extremity undercast use for post fracture plaster and/or plastic bracing. It typically consists of a knitted piece of stretchable fabric (e.g., acrylic, cotton, Lycra) that is tapered from a wide top to a narrowed end at the toes and usually includes a wider heel pocket. It is available with above or below the knee length; each type may have open toe or full foot design. This is a single-use device.