Of course other types of fasteners, including snaps, buttons, buckles and the like, may be used to hold the strap 20A securely but comfortably around {HEAD ~ the head} of {TAIL ~ the user} 
of
Of course other types of fasteners , including snaps , buttons , buckles and the like , may be used to hold the strap 20A securely but comfortably around { HEAD ~ the head } of { TAIL ~ the user }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL