I have been buying and wearing this model for 6 years. The lenses do develop stress cracks around the nose after a short time, since the hardware connects directly to the lenses because there is no frame. Still, I love these glasses. The lenses will make your eyes smile...I guarantee. They sharpen my vision, and are so worth the extra money over cheap glasses which dull my vision. You can feel your face and eyes relax when you put them on. Frame fits well and doesn't squeeze your head. I recommend these glasses, despite the durability issue...they continue to wear well even with the cracks. And Serengetti will replace if you want...save your receipt.
Pros: Crisp Vision
Cons: Durability
This review was written in the old system and had content requirements that are different than reviews written today.