PATENTED HIGH DEFINITION OPTICS (HDO): Oakley's high definition optics provide superior optical clarity and razor-sharp vision at every angle as well as clarity and protection against impact and UV light, filtering 100% of UVA, UVB, UVC, and harmful blue light up to 400mm. OAKLEY CLEAR TO GREY PHOTOCHROMATIC LENSES darken automatically to help you adapt to changing light for ultimate performance. Even when the lens color lightens, it still filters out 100% of all UV. O-MATTER STRESS RESISTANT TECHNOLOGY: O-Matter Oakley frames are lightweight and durable for all-day comfort and protection. They're injected with molded thermoplastic O-Matter frame that provides improved strength and flexibility, and is designed to withstand shifting or deforming over time. VISIT THE OAKLEY BRAND SHOP: Click on the Oakley link above to shop the entire Oakley collection.