The removable heel provides bowlers with {HEAD ~ the flexibility} to have {TAIL ~ one pair} of shoes featuring different sliding characteristics to satisfy their needs in different lane surface conditions 
to have
The removable heel provides bowlers with { HEAD ~ the flexibility } to have { TAIL ~ one pair } of shoes featuring different sliding characteristics to satisfy their needs in different lane surface conditions
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH