These are the first pair of "Blue blocker computer glasses" i have owned. I sit at a computer A LOT and the strain on your eyes is no joke. The screen you can put over you computer makes your computer bulky and its just plain ugly, so I decided to try these out. SO WORTH IT! They did exactly as they say they would. The strain/pain I normally would have at the end of the day has subsided BIG time. (My bad posture is the cause of whats left). The glasses are big enough to fit any man and still look good too. They aren't too big or too small. They are actually pretty attractive! They came with a cloth to clean them as well, which helps because dust just clings to them like crazy. The nosepiece isnt too tight. I did have to adjust the glasses themselves to fit a little more snug on my head so when I looked around they didn't fall down or off. That was as simple as a little light bending.