Randolph Engineering sunglasses have been standard issue equipment for the United States Military since 1982, and they offer the very best of both fashion and performance sunglasses. Randolph Engineering sunglasses are made in America, and they are engineered with the same exacting standards that military specifications require. Randolph Aviator Sunglasses are also customizable. These customizable options include: frame colors, temple styles, and lens color and technology options. Between their timeless designs and top-quality performance, Randolph Engineering sunglasses are standard issue for a reason.Randolph Engineering Coronado is a Full Rim frame for Men, which is made of Metal.Most metal frames are made out of Monel. Monel has a copper and nickel base. This metal can be corrosion resistant, strong, and easily adjusted. It retains its stability and shape. This model features an Aviator shape, with a Double Bridge.The Randolph Engineering Coronado Sunglasses feature the following logo: Randolph on temple and lens.These Sunglasses work well for people whose style is: Classic.Ideal for usage with: Fashion.Randolph Engineering Coronado Sunglasses come with a cleaning cloth and protective carrying case.The sunglasses are available on certain colors with gradient tinted lenses - Gradient tints are tints that start off at a darker color at the top of a lens and then gradually lighten towards the bottom of the lenses. These tints are great for fashion and for reading outside on sunny days. Gradient coatings work by allowing an appropriate amount of light to filter through in certain areas and less in places where protection is most necessary.