wherein the first contact surface is on a first elastic region of the first lining part or the second contact surface is on {HEAD ~ a second elastic region} of {TAIL ~ the second lining part} 
wherein the first contact surface is on a first elastic region of the first lining part or the second contact surface is on { HEAD ~ a second elastic region } of { TAIL ~ the second lining part }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL