Moreover, the fastening layer includes interlocking hook and pile fastener materials for attaching {HEAD ~ the fastening layer} to {TAIL ~ the outsole} 
to
Moreover , the fastening layer includes interlocking hook and pile fastener materials for attaching { HEAD ~ the fastening layer } to { TAIL ~ the outsole }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL