Abstract: A first load (L1) is put on the upper leg (606) to create a contact area (619) between the front segment (610) and the front segment (618). The contact area (619) has a center point (601) located a distance (p1) from the front end (602). An upper forward segment (621) pulls away from a lower forward segment (623) immediately adjacent to the front end (602) to create a loop (625a). The first load (L1) is progressively increased to a second load (L2) and the center point (601) is rolled back from the distance (p1) to a distance (p2) from the front end (602). The segments (621) and (623) expand the loop (625a) to a loop (625b).

Abstract: A first load (L1) is put on the upper leg (606) to create a contact area (619) between the front segment (610) and the front segment (618). The contact area (619) has a center point (601) located a distance (p1) from the front end (602). An upper forward segment (621) pulls away from a lower forward segment (623) immediately adjacent to the front end (602) to create a loop (625a). The first load (L1) is progressively increased to a second load (L2) and the center point (601) is rolled back from the distance (p1) to a distance (p2) from the front end (602). The segments (621) and (623) expand the loop (625a) to a loop (625b).

Abstract: The shoe system comprises a shoe that has an upper rim section. A shoe sole is disposed inside the shoe and has a top layer. A shoe insert has a stiff first member and a resilient second member attached to the first member so that the first member is attached to the top layer of the shoe sole. The second member is movable between a compressed position immediately adjacent to the first member and an expanded position remote from the first member. The first member is disposed a first distance from the upper rim section when the second member is in the compressed position and the first member being disposed the same first distance from the upper rim section when the second member is in the expanded position.

Abstract: The shoe system comprises a shoe that has an upper rim section. A shoe sole is disposed inside the shoe and has a top layer. A shoe insert has a stiff first member and a resilient second member attached to the first member so that the first member is attached to the top layer of the shoe sole. The second member is movable between a compressed position immediately adjacent to the first member and an expanded position remote from the first member. The first member is disposed a first distance from the upper rim section when the second member is in the compressed position and the first member being disposed the same first distance from the upper rim section when the second member is in the expanded position.

Abstract: The shoe system comprises a shoe that has a toe section and a heel portion. A shoe sole is disposed inside the shoe and has a groove defined therein. The groove extends angularly from an upper surface of the shoe sole rearwardly towards the heel portion of the shoe. A wedge section is removably attached to the shoe sole. A shoe insert has a stiff first member and a resilient second member attached to the first member. The second member is inserted into the groove. The second member has one side that may be thicker than the opposite side so that the second member is only twistable in one direction.