{HEAD ~ A U fastener base} provided at the front of the seat bag is composed of a U frame and {TAIL ~ a resilient rubber ring} 
is composed of
{ HEAD ~ A U fastener base } provided at the front of the seat bag is composed of a U frame and { TAIL ~ a resilient rubber ring }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL