Banana Republic Amie/P/S is a Full Rim frame for Women, which is made of Acetate Plastic.Acetate is the most common material used for frame manufacturing. It has endless possibilities for color, texture, and patterns. It can even be laminated to create great visual effects, and it can retain a higher luster. Acetate is lightweight, so it is often chosen for its versatility in coloring as well as for its comfort. Acetate is made out of cotton seed fibers and plasticizers. This model features a Rectangular shape, with a Single Bridge.These Sunglasses work well for people whose style is: Classic, Stylish Designer.Ideal for usage with: Fashion, Everyday Driving.These sunglasses can accommodate prescription lenses. Please call our Customer Service Department to order prescription lenses for this model.Banana Republic Amie/P/S Sunglasses come with a cleaning cloth and protective carrying case.These sunglasses are available with polarized lenses on certain colors. Polarized lenses have a filter within the lens that blocks the wavelengths of light that cause glare. They can greatly enhance contrast and allow for greater depth of vision, especially in water. They are ideal for any situation where glare reduction is necessary, like driving or playing sports.