So the sun protection, uv is there. Also this is the bargain on glass lenses I have ever purchased. My only knock on these BNUS shades is the easy scratch ability to be glass.. if I wasn't in my work trk with the included case and wipe, I wld and still will use a cotton wipe. Some how this has micro scratches everywhere.. All though these have scratched easy, they are very well built other wise. I got my Costa, glass lenses shattered. Unfortunately, what once was an awesome company that had great standards and customer service has been lost by a big corporate eye glass company from Italy.. costa and Ray band's are now not even close.. so sadly I had to drop costa after a while. BNUS is a great price point for glass lenses. Just not super durable. Definitely worth tha try. ?I tried some other sunglasses for way cheaper and the quality was total garbage. I saw these and thought that they were just what I needed. And I was right. These are exceptional sunglasses. Very comfortable, sleek, high quality materials, very pleasant to look through. The light protection is about 90% of what I was expecting. There is still some discomfort when looking directly at the sun but most of the harmful light is blocked. Compared to other glasses that claim to be polarized, offer little to no protection from the bright sunlight. Sunglasses are very important for my driving because I had to rip off my sun visor a while back. I would not hesitate to try these out. I am very happy with them. Not to mention they look really good.These are simply great sunglasses. These are made with real glass, perfectly clear to look through, made strong and the polarizing is just wonderful. If you are looking for a great pair of more expensive sunglasses, then you need to look no further than these ones. I had to buy a replacement pair because the first pair I had purchased got stolen. I do advise to keep them where no one can steal them because these are very nice and create temptation to those who are dishonest in society. I suffer from constant headaches and need these in the bright light. These wrap around and fit perfectly to keep out all of the light that you do not want to shine in your eyes.The Lenses provide for great sun light protection. They also seem to greatly improve the detail of vision.I have a large head and these fit very well.I now have 3 pairs for, each of my vehicles.Great Sunglasses at a readonable priceGreat pair of glasses for the money,fit well and they look and feel comfortableMy husband really likes these sunglasses. He says everything is sharper and clearer looking through the glass lenses. Worth every penny!For outside all day work and driving a semi truck in fla in the summer. Plus they sit on top of my head and stay there even when I’m sweating bulletsI have read several reviews about this sunglass and most of them were positive reviews. I went ahead, placed my order and received my sunglasses yesterday. The pros and cons are given below:Pros:- The frames of the sunglasses are lightweight and you don't feel that you are wearing the sunglass.- It is a polarized glass lens and at affordable price!.- I have sensitive eyes and this sunglass does a very good job of covering my eyes.Cons:- It is a glass lens so you have to be extra careful as to not drop them.- The hinges sometimes make squeaky sound but a simple fix is to tighten the screws and you should be fine