More than adequate!
My only issue with them was they are large size lenses. I prefer shorter ones that I can look over the top of better as I only need them to read.  One pair seemed a little larger frame, but I have a small head and it's harder to fit me. They seem to be holding up quite well. I wear mine on a chain so sometimes they get damaged accidentally by seat belts, purses, etc but that is my fault.  Try them!
Rating: 4 stars