a spring for urging {TAIL ~ the second end portions} of the pair of {HEAD ~ hair retainers} in a closing direction thereof, 
a spring for urging { TAIL ~ the second end portions } of the pair of { HEAD ~ hair retainers } in a closing direction thereof ,
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH