Sole of a shoe

1. A sole of a shoe, comprising:

a midsole comprising a midsole toe edge;

at least part of a remove-ably attachable outsole comprising an outsole toe edge, and an outsole toe ridge;

the outsole toe ridge extends vertically to an outsole toe ridge height; and

the outsole toe ridge extends along at least part of the outsole toe edge;

wherein the midsole toe edge and the outsole toe ridge limit movement between the at least part of a remove-ably attachable outsole and the midsole in at least one direction;

wherein at least a portion of said outsole toe edge extends along a width of an upper surface of said remove-ably attachable outsole at said outsole toe ridge;

the midsole further comprising a midsole fastener area;

the at least part of a remove-ably attachable outsole further comprises an outsole fastener area;

wherein the midsole fastener area and the outsole fastener area comprises a hook and pile fastener system; and

at least one of the midsole fastener area and the outsole fastener area further comprises a consecutive series of gaps that interrupt the hook and pile fastener system.

2. The sole of claim 1 , further comprising:

the midsole further comprising a midsole recess above the midsole toe edge;

the midsole recess extending along at least part of the midsole toe edge;

the at least part of the remove-ably attachable outsole further comprising an outsole shelf extending along at least part of the outsole toe ridge;

wherein the outsole shelf terminates inside the midsole recess when the at least part of the remove-ably attachable outsole is attached to the midsole.

3. The sole of claim 1 , further comprising:

wherein both of the midsole fastener area and the outsole fastener area comprise a consecutive series of gaps;

wherein at least one of the midsole fastener area gaps and the outsole fastener area gaps further comprises a groove;

wherein at least one of the midsole fastener area and the outsole fastener area further comprises a protrusion, wherein the groove receives the protrusion.

4. The sole of claim 1 , further comprising:

wherein the gaps extend laterally from a left side to a right side with respect to the midsole.

5. The sole of claim 1 , further comprising:

wherein the gaps each have a width that extends longitudinally a distance from a leading edge to a trailing edge.

6. A sole of a shoe, comprising:

a midsole further comprising a midsole toe edge;

wherein the midsole toe edge and an outsole toe ridge limit movement between at least part of a remove-ably attachable outsole toe portion and the midsole in at least one direction;

wherein at least a portion of said midsole toe edge and a portion of said outsole toe ridge abut each other to form a seam; and

a remove-ably attachable outsole heel portion, said outsole heel portion being separate and distinct from said remove-ably attachable outsole toe portion;

the midsole further comprising a midsole fastener area;

the at least part of a remove-ably attachable outsole toe portion further comprises an outsole fastener area;

wherein the midsole fastener area and the outsole fastener area comprises a hook and pile fastener system; and

at least one of the midsole fastener area and the outsole fastener area further comprises a consecutive series of gaps that interrupt the hook and pile fastener system.

7. The sole of claim 6 , further comprising:

the midsole further comprising a midsole recess located above the midsole toe edge that extends along at least part of the midsole toe edge;

wherein the midsole recess and an outsole shelf limit movement between the at least part of the remove-ably attachable outsole toe portion and the midsole in at least one direction.

8. The sole of claim 7 , further comprising:

the midsole further comprising a midsole fastener area with a midsole fastener area gap.

9. The sole of claim 7 , further comprising:

the midsole fastener area further comprising a midsole fastener area gap;

the midsole fastener area gap further comprising a groove;

wherein the midsole groove and an outsole protrusion limit movement between the at least part of the remove-ably attachable outsole toe portion and the midsole in at least one direction.

10. The sole of claim 7 , further comprising:

a midsole fastener area gap extending laterally from a left side of the midsole to a right side of the midsole.

11. The sole of claim 7 , further comprising:

a finger channel on the midsole.

12. A sole of a shoe, comprising:

at least part of a remove-ably attachable outsole further comprising an outsole toe edge and an outsole toe ridge; wherein

said at least part of the remove-ably attachable outsole terminates at an edge opposite said outsole toe edge;

the outsole toe ridge extending vertically to an outsole toe ridge height;

the outsole toe ridge extending along at least part of the outsole toe edge;

wherein the outsole toe ridge and a midsole toe edge limit movement between the at least part of the remove-ably attachable outsole and a midsole in at least one direction;

said midsole further comprises a cavity extending a height axially into said midsole;

said outsole further comprises a consecutive series of gaps that interrupt a hook and pile fastener system and extend laterally across a bottom surface of said outsole;

wherein

said outsole terminating edge is approximately adjacent at least a portion of said cavity when said at least part of the remove-ably attachable outsole is secured to said midsole.

13. The sole of claim 12 , further comprising:

an outsole shelf extending along at least part of the outsole toe ridge;

wherein the outsole shelf and a midsole recess limit movement between the at least part of the remove-ably attachable outsole and the midsole in at least one direction.

14. The sole of claim 12 , further comprising:

the consecutive series of gaps comprises at least one protrusion.

15. The sole of claim 12 , further comprising:

the consecutive series of gaps further comprises at least one outsole protrusion;

wherein the outsole protrusion and a midsole groove limit movement between the at least part of the remove-ably attachable outsole and the midsole in at least one direction.

16. The sole of claim 12 , further comprising:

the gaps extend laterally from a left side of the at least part of a remove-ably attachable outsole to a right side of the at least part of a remove-ably attachable outsole.

17. The sole of claim 3 , further comprising:

wherein when the groove accepts the protrusion they form a flexible joint that limits shear stress on the fastener areas caused by bending of the shoe, and wherein the groove and protrusion are allowed to flex independently as the shoe bends.

18. The sole of claim 6 , further comprising:

wherein the consecutive series of gaps that interrupt the hook and pile fastener system further comprise a consecutive series of grooves that accept a consecutive series of protrusions.

19. The sole of claim 18 , further comprising:

wherein when the grooves accept the protrusions they form a flexible joint that limits shear stress on the fastener areas caused by bending of the shoe, and wherein the groove and protrusion are allowed to flex independently as the shoe bends.

20. The sole of claim 12 , further comprising:

wherein the consecutive series of gaps that interrupt the hook and pile fastener system further comprise a flexible joint that limits shear stress on the hook and pile fastener system caused by bending of the shoe.