The larger framed Revo Gunner Polarized Sunglasses are some of the clearest, most advanced polarized sunglasses in the world. All Revo sunglasses provide superior clarity with optically-correct lens performance but also deliver a great visual experience so you can enjoy the outdoors.Every pair of Revo lenses begins with a mirror coating, high-contrast polarized lenses and LMS? technology. Revo Serilium? lenses ? A special formulation of polycarbonate provide superior optics, impact-resistance and great overall vision and performance. Lenses withstand high-velocity impact. Lightweight. Color and contrast enhancement. Revo Light Management System? (LMS) optimizes usable light that passes through the lens for specific environments and activities. Blocks 100% UVA-B-C rays. Back Surface Protection ? Combination of protective filters and coatings help reduce intrusive back surface reflections, delivers clear, sharp images and less eye strain. Revo SurfacePro? is a permanent coating that repels virtually anything that may come in contact with your Serilium? lenses. Whether it?s water, oil, sweat, dirt, dust, ink or even a fingerprint, SurfacePro? keeps your lenses clean and ready to perform in any condition. Polarized lenses provide 99% polarization efficiency eliminating glare and haze.