These Oxigen metal-rimmed men's glasses have plastic frames, which makes them seem like they would be less durable than your average pair of sunglasses. On the contrary, Oxigen is a manufacturer that knows what it's doing when it comes to the production of shades. The brand has been working tirelessly on the quality of the glasses it produces. These particular sunglasses are no exception. You have to do your part to take care of any sunglasses you purchase. When you buy sunglasses, you have to find a manufacturer that has a reputation for excellence. Oxigen is that kind of manufacturer.