Abstract: In an extensible shoe shaper, the toe and heel are connected by means of a kinematic hinge element, formed of a plastic material strip of varying thickness applied by pressure, the configuration of which can be varied--in order to vary the extension of the shaper--by means of a screw handwheel, slidably fixed to the toe and acting on said kinematic element.

Abstract: A mold for molding a boot or similar footwear from an elastomeric composition and simultaneously lining the footwear with a fabric, has first and second shells each having a cavity which complements the cavity of the other to form a large cavity which corresponds to the upstanding sides of the footwear and a third shell which has a cavity corresponding to the sole thereof. The three shells are assembled together with a rigid core member enclosed therein which defines the inside of the boot. The core member has an elastically expandable casing. Conduits are arranged in the core member for conveying a fluid under pressure to expand the casing.