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