The case is formed of {HEAD ~ rigid material}, is hermetically connected to an opening of the airbag and is provided with {TAIL ~ the air discharge port} 
The case is formed of { HEAD ~ rigid material } , is hermetically connected to an opening of the airbag and is provided with { TAIL ~ the air discharge port }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL