{HEAD ~ A heel} includes {TAIL ~ a member} with a first surface having a fastening layer for removable attachment of the member to an outsole in two different positions, and a second surface having an outer layer with a first sliding characteristic in one position and a different sliding characteristic in another position 
includes
{ HEAD ~ A heel } includes { TAIL ~ a member } with a first surface having a fastening layer for removable attachment of the member to an outsole in two different positions , and a second surface having an outer layer with a first sliding characteristic in one position and a different sliding characteristic in another position
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH