First thing I noticed with these glasses was the build quality, which was very tight and solid. The arms fold out and lock into place with a firm and tightly built feel without showing any signs of that flimsiness many glasses have. I believe I could get punched in the eye or temple with these things and they would still be in one piece. The clarity of the lenses are very nice and have a good quality polarizing effect. I like how they are fairly darkly tinted as well, making them comfortable to wear in very bright sunlight while eliminating the glare from car windshields while driving. The arms are a little tight on the sides of my head where they meet my head behind my ears, but this provides an athletic type fit that kind of sticks them to your face. I've had oakly in the past and they were not built nearly as well as these and the lenses scratched very easily. The only complaint I have so far is that the tightness of the arms made a sore spot on my head where they pressed in after about an hour; but I'm hoping they will break in over time. I suppose a little tight is better than a little loose though, right? I would like to have seen an adjustable nose piece but the drawback would be less durability I suppose.