Great product! I used this when I worked in a hospital emergency room. I needed something that would hold my glasses out of the way, but keep them handy and quickly accessible. This does the trick very nicely. You can affix your glasses to the holder and they stay put, but more importantly, you can remove them from it very quickly. Ease of use gives this necklace 5 stars. Also, it's pretty. Whenever my glasses weren't affixed to the holder, I received many compliments on my pretty "necklace"!