While I had been looking for glasses with replaceable lenses, I decided to give these a try -- the price was certainly right. Because I have a smaller head I have a hard time finding glasses that fit, and most of my sunglasses are kid sized. These are excellent, with the wraparound arms and stay on my face securely. They have only fogged up twice under the welding helmet, but only when I did not have them in place properly. They fit closer to the face, which I prefer, and are lightweight, comfortable, and leave almost nothing in the peripheral vision. I will definitely get these again!
-fits a smaller head, but also accommodates my husbands larger head
-snug, but not tight
-no "excess" in peripheral view
-stays in place
-price can't be beat
ConsDoes not have replacement lenses (but really, for this price it's forgivable!)