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