{TAIL ~ The inner core} can be comprised of cork, kapok, {HEAD ~ rubber} or a blend of thermoplastic polymers and copolymers 
{ TAIL ~ The inner core } can be comprised of cork , kapok , { HEAD ~ rubber } or a blend of thermoplastic polymers and copolymers
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH