Product review (2 stars): Kid Says It's Uncomfortable
I ordered this GU Angqi SIlicome Eyeglasses Strap for a student in my school that just got glasses and they don't stay on too well during recess.  His parents expressed concern that they are afraid he will soon break them.  It took a long time for this to arrive from China. When it finally did arrive, it was in a little plastic envelope that was not in very good shape.  Inside that was a little plastic baggie with the strap in it with absolutely no instructions how to put it on the glasses.  Fortunately, I have a little common sense and figured it out by looking at the picture.  He didn't like the strap. He complained that it hurt his head and whines when I put it on him.
Disclaimer: I received a discount on this item in exchange for me honest review, whether positive or negative.