A foot arch support device includes a base seat, a movable unit, high and low heel members, and an actuating unit. The base seat includes a first base plate. The movable unit includes a movable plate that is movable relative to the first base plate between high and low curvature positions. When the low heel member is coupled to the base seat, the movable plate is at the low curvature position. When the high heel member is coupled to the base seat, a support part of the high heel member abuts against the movable plate, and the movable plate is pushed by the high heel member to the high curvature position. The actuating unit is operable for permitting removal of a selected one of the high and low heel members from the base seat.

A sole assembly for a convertible shoe configured to adopt a flat configuration in which a low heel is removably connected to a heel region, and a high heel configuration, in which a high heel is removably connected to the heel region, the convertible shoe including: a unitary midsole portion including a flexible forefoot support region at a front end, and a rigid hindfoot support region disposed adjacent the forefoot support region, the arrangement being such that the flexible forefoot support region is configured to flex between being substantially parallel with the rigid hindfoot support region in the flat configuration, and extending at an angle generally transverse to the rigid hindfoot support region in the high heel configuration; wherein the forefoot support region includes a substantially flexible midsole and the hindfoot support region includes a substantially rigid midsole, and the substantially flexible midsole forefoot is moulded over a portion of the rigid hindfoot support to facilitate in use the change in angle of the forefoot support relative to the hindfoot support region, and a bayonet-style quick connector fastening dock in a heel region of the hindfoot support region for selective quick release and mount of the high heel and flat heel.

A sole assembly for a convertible shoe configured to adopt a flat configuration in which a low heel is removably connected to a heel region, and a high heel configuration, in which a high heel is removably connected to the heel region, the convertible shoe including: a unitary midsole portion including a flexible forefoot support region at a front end, and a rigid hindfoot support region disposed adjacent the forefoot support region, the arrangement being such that the flexible forefoot support region is configured to flex between being substantially parallel with the rigid hindfoot support region in the flat configuration, and extending at an angle generally transverse to the rigid hindfoot support region in the high heel configuration; wherein the forefoot support region includes a substantially flexible midsole and the hindfoot support region includes a substantially rigid midsole, and the substantially flexible midsole forefoot is moulded over a portion of the rigid hindfoot support to facilitate in use the change in angle of the forefoot support relative to the hindfoot support region, and a bayonet-style quick connector fastening dock in a heel region of the hindfoot support region for selective quick release and mount of the high heel and flat heel.