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