Preferably, {HEAD ~ the inner core} is comprised of {TAIL ~ an ethylene vinyl acetate copolymer}, an ethylene carboxylic acid copolymer or a blend of both 
Preferably , { HEAD ~ the inner core } is comprised of { TAIL ~ an ethylene vinyl acetate copolymer } , an ethylene carboxylic acid copolymer or a blend of both
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH