As discussed below in more detail, {HEAD ~ such features} enable {TAIL ~ a user} to raise or lower the rearward section of the collar with particular ease 
enable
As discussed below in more detail , { HEAD ~ such features } enable { TAIL ~ a user } to raise or lower the rearward section of the collar with particular ease
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH