They don't fit the end of my plastic glasses
I thought these were put on TOP of the edge of the glasses. It's not, the silicon material is supposed to SLIDE THROUGH the edges of your glasses. The very edges of my Burberry glasses are very wide then they taper down to a normal plastic thickness/width so it's impossible to slide these through. I actually hadn't noticed this fact before purchasing. The silicon opening just is not wide enough to accommodate my particular glasses. I don't see a whole lot of "give" to this material so I'm not sure how they can fit and slide on to any glasses. Cool idea, wish it worked, i'll have to return it though as it's useless to me with my current glasses. I don't want to hold onto more clutter until I get a new pair later this year and who's to say these would work on a future pair of glasses I will purchase. So if your glasses have a wide edge don't buy these. I would just recommend don't buy these as I don't really see how they can fit on any plastic glasses.
Rating: 2 stars