The Oakley Latch Alpha Prizm Polarized Sunglasses come with a bold lens shape and a lightweight O Matter frame. Its Unobtainium temples increase grip with perspiration, while the silicone nosepads add comfort and adjustability. The Prizm lenses help enhance color, contrast and detail with the Plutonite lens offering 100% UV Protection filtering. With the HDO Optics, you'll get crystal clear vision along with impact resistance. They're also available with the Oakley Authentic prescription lenses and this model comes polarized. Die-Cast Aluminum Center. High Density Unobtainium Temples. Silicone Nosepads. Frame Suitable for Medium to Large Faces. HD Polarized. Plutonite Lens. Iridium Lens Coating. Optimal Precision and Impact Resistance. HDO Optics. Available with Oakley Authentic Prescription Lenses .