These polorized sunglasses are made very well, sturdy and each interchangeable lens snaps on very easy and stays on very well. They are perfect for all types of sports, can be changed to fit all your needs or just to change with your gear. The lens are very sturdy as well and seem to to be made of high quality material. The glasses fit nicely over my boyfriends ears and they are snug on him, not loose like some glasses. He really likes that he can change them up and makes it look like he has a new pair of sunglasses every day. He likes the darker ones best, he thinks I can't tell where he is looking, but I can and I think I like the yellowish ones the best. All a matter of personal preference.