The sunglasses 1, wherein the plug in projection forms {TAIL ~ a stop} for {HEAD ~ the nose piece} 
The sunglasses 1 , wherein the plug in projection forms { TAIL ~ a stop } for { HEAD ~ the nose piece }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD