Your adjustable eyeglasses can last for many years, as long as you take good care of them. They are made of premium quality materials, which make them more durable than your average eyeglasses. They are also rust-free and are guaranteed not to rust due to water, sun rays, snow, or even prolonged usage. The coating of these eyeglasses is made of quality materials as well. They will not remove or become dull even after a long period of use.