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