{HEAD ~ The flexible member} is provided with stretch areas, and can be used in {TAIL ~ pairs} for greater flexibility as to the areas to be treated 
{ HEAD ~ The flexible member } is provided with stretch areas , and can be used in { TAIL ~ pairs } for greater flexibility as to the areas to be treated
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH