With this arrangement, {TAIL ~ the nose pads} can be held in {HEAD ~ any selected vertical positions} and angularly adjusted to comfortably fit over a wearers nose 
With this arrangement , { TAIL ~ the nose pads } can be held in { HEAD ~ any selected vertical positions } and angularly adjusted to comfortably fit over a wearers nose
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH