Oakley Flak Draft Sunglasses - Prizm Daily Polarized. An innovative sports specific eyewear piece designed to the specific demands of Oakley's stable of global professional athletes. Features include, lightweight, stress-resistant O Matter frame material, optimized peripheral vision and side protection of 8.75 base lens curvature, comfort and performance of 3Point Fit that holds lenses in precise optical alignment. metal icon accents, pptical precision and performance that meets ANSI Z87.1 standards, impact resistance that meets ANSI Z87.1 standards for high-mass and high-velocity impact. UV protection of Plutonite lens that filters out 100% of UVA/B/C & harmful blue light up to 400 nm. Glare reduction and tuned light transmission of Iridium lens coating, multiple interchangeable Unobtainium nose pad options for customizable and comfortable secure fit, protective sports-specific Oakley 'Soft Vault' case included with capacity for extra lenses. Polished black frame with Prizm Golf specific lenses. Prizm is a revolution in lens optics built on decades of color science research. Prizm lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility; combined with the superior clarity and glare/reflection reduction that polarised lenses offer, makes this the real deal for any serious sportsman. 14% Light Transmission provides increased contrast perception in bright light conditions.