Bobbi Brown The Ruby/S is a Full Rim frame for Women, which is made of Stainless Steel Front and Metal Temples.Hypoallergenic and nickel free, stainless steel is great for active eyeglass wearers because the frames won't lose their shape nor will they corrode or rust when it is exposed to water - 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 a Rectangular shape, with a Single Bridge.These Sunglasses work well for people whose style is: Classic.Ideal for usage with: Fashion.These sunglasses can accommodate prescription lenses. Please call our Customer Service Department to order prescription lenses for this model.Bobbi Brown The Ruby/S 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.