Interchangeable component shoe system

1. A shoe system comprising:

a removable upper unit having a lower edge, the upper unit having an upper connector extending generally downwardly from the lower edge of the upper unit, the upper unit being configured to extend across at least a portion of a user's foot; and

a sole unit comprising a lower connector being attachable to the upper connector of the upper unit to form a removable connection to facilitate removable attachment of the upper unit to the sole unit; and a support structure extending at least partially along a periphery of the sole unit, the support structure extending upwardly from the sole unit to define an upper portion configured to abut at least the upper connector when the sole unit is coupled to the upper unit, the support structure extending inwardly from the periphery of the sole unit from one side of the sole unit to another side thereof, a first portion of the support structure being coupled to an interior area of the sole unit along the periphery thereof, a second portion of the support structure being coupled to the first portion of the support structure and to an upper surface of the interior area to fix the orientation of the upper portion of the support structure relative to the sole unit, the upper portion of the support structure defining an upper edge configured extend above the lower edge of the upper unit when the sole unit is coupled to the upper unit.

2. The shoe system of claim 1 , wherein the removable connection between the upper and lower connectors is positioned below the upper edge of the support structure when the sole unit is coupled to the upper unit.

3. The shoe system of claim 1 , wherein the upper portion of the support structure comprises a panel extending about at least a portion of the sole periphery, the panel comprising the first portion and an upper portion, the first portion extending horizontally and being attached to the sole base.

4. The shoe system of claim 3 , wherein the first portion extends generally inwardly along the upper surface toward the interior area relative to the periphery of the sole unit.

5. The shoe system of claim 1 , wherein the first portion of the support structure comprises a panel and the second portion of the support structure comprises a sole insert, the panel and the sole insert being formed separately from each other.

6. The shoe system of claim 1 , wherein the upper edge of the support structure extends at least partially above the lower connecting means.

7. The shoe system of claim 1 , wherein the upper and lower connectors comprise zippers.

8. The shoe system of claim 1 , wherein the upper connector hooks onto the lower connector.

9. The shoe system of claim 1 , wherein the support structure is formed separately from the sole unit.

10. The shoe system of claim 1 , wherein the support structure extends along the periphery of the sole unit about a front end, a rear end, or opposing sides of the sole unit.

11. The shoe system of claim 10 , wherein the support structure extends substantially continuously about the periphery of the sole unit.

12. The shoe system of claim 1 , wherein the lower edge of the upper unit extends continuously along a lower periphery of the upper unit.

13. The shoe system of claim 12 , wherein the upper connector extends generally downwardly from the lower edge of the upper unit continuously about the lower periphery thereof.

14. The shoe system of claim 1 , wherein the upper edge of the upper portion extends continuously about the sole periphery.

15. The shoe system of claim 14 , wherein the lower connector extends generally upwardly from the upper edge of the sole unit continuously about the sole periphery thereof.

16. The shoe system of claim 1 , further comprising an insole having an insole periphery and a raised wall extending generally upwardly from the insole at least partially about the insole periphery, the insole being sized and configured to be fitted into the interior area of the sole unit with the raised wall abutting at least a portion of an interior face of the upper portion of the support structure for supplementing the structural strength of the support panel against transverse force.

17. A shoe system comprising:

a removable upper unit being configured to extend across at least a portion of a user's foot, the upper unit comprising:

a lower edge; and

an upper connector extending generally downwardly from the lower edge of the upper unit; and

a sole unit defining a sole periphery and an interior area, the sole unit being removably attachable to the upper unit, the sole unit comprising:

a lower connector being configured to engage with the upper connector of the upper unit to form a removable connection to facilitate removable attachment of the upper unit to the sole unit;

a support structure extending from one side of the sole unit to another side thereof and adjacent to the sole periphery, the support structure extending upwardly from the sole unit to abut at least the upper connector when the sole unit is coupled to the upper unit, the support structure having a perimeter portion being coupled to an upper surface the sole unit and a center portion being coupled to perimeter portion and the upper surface of the interior area of the sole unit, the perimeter portion of the support structure defining an upper edge configured extend above the lower edge of the upper unit when the sole unit is coupled to the upper unit.

18. The shoe system of claim 17 , wherein the perimeter portion of the support structures comprises a panel having vertical and horizontal portions, and center portion comprises a sole insert layered on top of the horizontal portion of the panel.

19. The shoe system of claim 18 , further comprising an insole disposed on the center portion of the support structure.

20. The shoe system of claim 17 , wherein the perimeter portion and the center portions are separate pieces of material.