I bought these to run in. I've used them a couple of times, and I am very pleased with how light weight they are and how confortably they fit. I don't even notice them as they don't move around on your nose. They are very adequate for the job and much more economical than the Oakleys, Bolles, or Icicles I've previously used. I figure the way I lose or misplace sunglasses or they become scratched or sat on, these are more than adequate for my needs and at a much better price than comparable glasses.