This is the first distance of {TAIL ~ travel} {HEAD ~ the temple} may flex beyond its fully open, unbiased position on the eyewear 
This is the first distance of { TAIL ~ travel } { HEAD ~ the temple } may flex beyond its fully open , unbiased position on the eyewear
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH