I have been wearing Serengeti sunglasses for more than 20 years and I still think the optics are the best on the market. Though outstanding, the new polycarbonate lenses don't seem to provide quite the "ahhhh" factor to ones eyes that the glass lenses do. The frame design is light weight, and cool, but the lack of hinges makes it impossible to fold the glasses and put them in your pocket temporarily when you need to take them off. I didn't think about that when I purchased them and because of that, although I certainly will own many more pairs of Serengeti's, I will not buy this particular model again.
Pros: light weight and comfortable
Cons: hingeless frame design makes them difficult to carry
This review was written in the old system and had content requirements that are different than reviews written today.