A thumb break strap or {HEAD ~ flap} or other type of retainer may be used in {TAIL ~ this embodiment} 
A thumb break strap or { HEAD ~ flap } or other type of retainer may be used in { TAIL ~ this embodiment }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL