US Patent 8938890 Expandable shoe

An expandable shoe has a top portion, a pair of side portions, a back portion, a sole, a heel and a first elastic member. The first elastic member joins the top portion to the pair of side portions at a critical location which is at the junction of the top portion and the side portions. The first elastic member is in the shape of an inverted “U” extending along the front of the shoe. The expandable shoe may further have a second elastic member joining the back portion to the side portions at the critical locations at the junctions of the back and side portions and the junctions of the back and the rear of the sole. The second elastic member is in the shape of an upright “U”.