{HEAD ~ The adjustable strap} 308 in the rear is used to adjust {TAIL ~ the headset} to a comfortable tension setting for many different head sizes 
is used to adjust
{ HEAD ~ The adjustable strap } 308 in the rear is used to adjust { TAIL ~ the headset } to a comfortable tension setting for many different head sizes
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH