These fit great on my glasses. I've tried several pairs of prescription sunglasses but I hate changing them and carrying around cases with glasses and cases for glasses. I've tried the lenses that change in the sun but they stay dark too long. These clip ons are perfect. I put them in my pocket and put them on when they're needed.
Clip on lenses to go over prescription glasses are probably not the “cool” statement that most want to make BUT I have to tell you, these lenses look really good and match up with both my husband and my glasses. They flip up so you can easily go from outside sunny to inside with ease. They are a great quality and I would absolutely buy them again.