As we all know, vintage style has been always in the leading position in recent years. Obviously, aviator men's sunglasses are just a symbol of vintage style, so they have been in style all the time and they are especially preferred by men. As far as I'm concerned, aviator sunglasses are not only suitable for men, but also appropriate for women because they are chic and cool. You will be at the cutting-edge of fashion with this kind of sunglasses. And the lenses of sunglasses can be divided into 3 types: single vision, bifocal lenses and progressive lenses. Knowing this is helpful for you to choice a best suitable sunglasses.