I am at the age where not only do I need glasses to see at distance but need separate glasses (or no glasses) to read.  Usually the problem is not that big of an issue except when I am in court.  I have to have my glasses on to see the Judge and my client but I have to take them off to read my notes or court documents.  The problem is I am constantly accidentally leaving my glasses on the Judge's bench or the lawyer's podium.  So I decided to break down and get what my mom calls a "granny string" to wear when I am in court.  I did some research and decided on this pearl / shell one since it would work with my outfits whether I was wearing gold or silver jewelry.  It came in 48 hours of ordering and it looks very pretty.  I wore it to court that day and got many positive comments.  The end where you slide your glasses in has a silver toggle so you can adjust the tightness so your glasses stay secure.  Very happy with the product and whole wholeheartedly recommend it.