I bought these hoping that the lenses would be darker than other brands and that they would fit better over my oval-ish frames. The lenses are darker and I don't find myself squinting. The lack of a small lens on the arm of the frame is a shock at first but quickly adaptable. The fit is okay but since my glasses are much closer to rectangle frames than round, the traditional rectangle style fit-over glasses sit much better. The rhinestones I assume are placed as such to diminish the obviousness of fit-overs.. not sure if it works but they sure are cute.