The matting 1, wherein {HEAD ~ the core material} comprises PVC foam or {TAIL ~ phenolic foam} 
comprises
The matting 1 , wherein { HEAD ~ the core material } comprises PVC foam or { TAIL ~ phenolic foam }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL