Got these in the white/tortoise variety and love 'em. I have a thing about people being able to see my eyes through my sunglasses. I'm of the opinion that no one should know where I am looking - sneaky right? Well the grey lenses on these are pretty decent. If someone looks hard enough and the lighting is just right, you can see my eye balls. However, in most situations, my eyes are properly concealed.
One more thing - these are certainly in the "fashion" category as opposed to "sporty". The glasses are pretty hefty compared to my other "sporty" glasses. Additionally, if I try to prop them on top of my head (when I go indoors, etc), the combination of the weight and the fact that the temples are all smooth and don't have any rubberized points, it feels like the glasses want to fall off non-stop. To be clear, when I am wearing them on my eyes, they stay on great. I am only talking about when I put them on top of my head to get them out of my way.
Overall, I love the design and the look. 4 stars. Lost 1 star because they don't sit on top of my dome very well.