Imported Metal frame Anti Reflective lens Polarized UV Protection Coating coating Lens width: OS millimeters Arm: 130 millimeters POLARIZATION: Through advanced lens technology, Suncloud polarized lenses filter and eliminate horizontally reflected, visually interfering light waves known as "glare"which results in superior visual clarity, definition, color transmission and comfort. LENSES: Polycarbonate material provides a great blend of impact resistance, optics, and are lightweight so you can comfortably wear them all day for your sport performance needs. 100% UV PROTECTION: All Suncloud lenses provide 100% protection for harmful UVA and UVB sun rays. Great for use during outdoor activities in any weather conditions. EVOLVE ECO-MATERIAL: Our proprietary eco-friendly Evolve material incorporates 53% bio-based material into our injected-polymer sunglasses. LIFETIME WARRANTY: Unparalleled frame fit, value and polarized lenses, all backed by our genuine lifetime warranty.