Abstract: A flexible precast foot comprises a hollow flexible slipper member which has a rounded heel contour and a keel cavity. The resiliency of the rounded heel is controlled by the type of foam used in order that the compressibility of the heel may be varied during construction. A stump support is custom manufactured from reinforced plastic and the like, from a negative plaster mold and comprises an elongated socket with fenestrations being provided on each side to facilitate the engagement and disengagement of the stump. The negative socket mold is formed by a strip casting plaster technique and the finished positive stump socket is then fitted to the foot and secured to a strip of belting or similar material which extends into the keel cavity. This cavity is filled with "Flexane" rubber or any suitable elastomeric material such as nonfoaming urethane, synthetic rubber which also molds around the distal end of the stump socket.