Ok but I found a different option for me
The concept is great but for me they are too visually and physically distracting. When you put them on, it is apparent they make a difference and they are soft behind the ears. But, for me, it is just one extra step that I don't like; you have to size each one around the ear; in other words, you can't just slip your glasses on. The same process when you take them off. And for me, after I take my glasses off and put them on the desk, I have to look at them with the forms on them, and I have the subliminal image that I have to go through the process again.<br /><br />So, I have stopped using them and have gone to a new solution. I went to the local hardware store bought various sizes of very thin rubber washers in black. Not the big thick ones, but thinnest I could find in various ring sizes (.15-.75 cent each) because I was not sure of what would work. I then twisted the washers like rubber bands (which I suppose you can use) around the tip of my frames, experimenting one side to the other until I got a fit that worked comfortably behind each ear and voila-no extra step and no distracting visuals. When I put my glasses on, they sit just great, occasionally I have to make  adjustment when putting them on, but it is a matter of a slight pushing the rubber back or forward.
Rating: 4 stars