Really good idea. Works well depending on mask.
I tried these on my plastic frame glasses, and I was able to slide them into place. I think how well they work depends on the style of mask you are attaching, and how tight the ear loops are. A brand new maks out of the package seemed to work pretty well. It fits more snugly. An accordian style mask left a bit of a gap on the bottom. You have to play with the elastic to find the right place for it to sit on the arms of the glasses. I found my old looser cloth masks do not do as well. They don't hold in place and the ear loops may be too thick for this silicone button to grab. With the right mask it does prove to be comfortable. It comes with 6 pairs, so you should have enough here for most of your glasses, with some spare... unless you are sharing!
Rating: 4 stars