securing a backing sheet of supple fabric material with one broadside thereof affixed to the other broadside of {HEAD ~ the sheet} of {TAIL ~ flexible, resilient material} 
securing a backing sheet of supple fabric material with one broadside thereof affixed to the other broadside of { HEAD ~ the sheet } of { TAIL ~ flexible , resilient material }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL