I have to be honest... I was a little sceptical about the quality of the sunglass initially, but I decided to give it a try. I have been looking for a nice and comfortable sunnies for my runs. I was really surprised that the quality of this sunglass is really good & it is really comfortable to wear for my runs! It lives up to its promise! I don't use any other sunnies except this one when I go out for my runs. I highly recommend you getting a pair for yourself! I'm going to get myself a second pair!