The rubber locking device for a bicycle seat bag 1, wherein said {HEAD ~ rubber ring} is provided at one end with {TAIL ~ a pull and anti slip roughness} 
is provided with
The rubber locking device for a bicycle seat bag 1 , wherein said { HEAD ~ rubber ring } is provided at one end with { TAIL ~ a pull and anti slip roughness }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL