The first material is selected from the group consisting of {HEAD ~ cork}, kapok, rubber, or a thermoplastic resin such as an ethylene vinyl acetate copolymer, an ethylene acrylic acid copolymer or {TAIL ~ a blend} of both 
The first material is selected from the group consisting of { HEAD ~ cork } , kapok , rubber , or a thermoplastic resin such as an ethylene vinyl acetate copolymer , an ethylene acrylic acid copolymer or { TAIL ~ a blend } of both
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH