I got these sunglasses since my glasses are too large and square to be worn under regular sunglasses and I needed to stop being blinded while driving before I caused a wreck. These sunglasses work great for me! I haven't compared them to other brands, but since these are cheap and serve the purpose I like them. They fit very snuggly over your glasses so you don't have to worry about them sliding off. And since they fit that way, it's difficult for anyone to notice that you're wearing glasses underneath. My only issue is if it suddenly becomes sunny and I have to put them on, it can be a two hand job. This is ok if I'm driving in a place with stop signs or red lights and I can put them on real quick, but I drive the expressway often and taking both hands off the wheel while going 70mph is not something I try to do often. Otherwise it is a great product.