Smith Optics' sunglass collection carries on Smith's legacy of innovative frame engineering, outdoor adventuring, and fusing classic and modern designs. From environmentally-friendly frame materials to Smith's PivLock interchangeable lens system, Smith Optics sunglasses are created to outfit those people whose lifestyle and success rely on clear vision and thorough protection from the sun and the elements. Smith Optics sunglasses are characterized by sharp detailing, 100% UV protection, expert polarization, and smart styles. Many of Smith's sunglasses are even equipped with built in military-level protection. Smith Optics sunglasses, like the forward thinking adventurers who wear them, seek to push the envelope on performance and scale the cutting edge of style.Smith Drake/S is a Full Rim frame for Men, which is made of Nylon.Nylon is a thermoplastic material that is blended in order to counteract its initial brittleness. Nylon blends are lightweight, stable, and resistant to breakage. Nylon has less of a tendency to "bleed" it's plasticizers resulting in great hypoallergenic properties. It can be blended with polyamides,grilamid, or trogamid. This model features a Rectangular shape, with a Single Bridge.This frame features a spring hinge, which keeps its initial balance and adjustment, thereby avoiding the need for subsequent adjustments.These Sunglasses work well for people whose style is: Classic.Ideal for usage with: Fashion, Everyday Driving.Smith Drake/S Sunglasses come with a cleaning cloth and protective carrying case.These sunglasses are available with a mirror coating option on certain colors. Mirror coatings are suitable for protection from intense light. A mirror coating reflects back light and reduces the amount of light passing through the lens. This makes it more comfortable for eyes in very sunny conditions.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.