When stretching the umbrella, {HEAD ~ the protruding button} at the fastening device is steadily locked at the fastening orifice at {TAIL ~ the fixing portion} to smoothly stretch the umbrella 
When stretching the umbrella , { HEAD ~ the protruding button } at the fastening device is steadily locked at the fastening orifice at { TAIL ~ the fixing portion } to smoothly stretch the umbrella
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH