Its purpose is to extend {HEAD ~ the life} of {TAIL ~ body boards} when used recreationally in the surf 
of
Its purpose is to extend { HEAD ~ the life } of { TAIL ~ body boards } when used recreationally in the surf
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH