I purchased these (with round lenses) after having broken a pair with a similar shape. They have pleasantly surprised me! It is the first pair of sunglasses I own that do not threaten to slip off my face when I look down, and the are super comfortable. I have dropped them for other reasons, but needed not worry about that. It seems the lenses are just recessed enough that they will not scratch on a flat surface.
The glasses are ultra light, come with hard and soft case. The color of the lenses are quite nice, cooler in the center and warmer on the periphery. With the round ones, you can turn the lenses to adjust the polarization ti your liking.
Communication about shipping etc was fast and super friendly!
Oh, and they get lots of compliments. I'm happy.