Oakley has been toying with a mix of art and technology for some time. The idea was to create clean, authentic style for those who don't just walk the path of life - they stomp it and leave footprints. Oakley SI Fuel Cell Sunglasses boast unflinching originality and a smooth look - proof that when authenticity speaks for itself, it speaks with volume. The two lenses are actually cut from a single shield of optically pure Plutonite, then placed in the frame to maintain the original, continuous contour. An innovation of High Definition Optics (HDO), dual-lens Polaric Ellipsoid lens geometry extends clarity all the way to your peripheral view. Optical precision and impact resistance meet or exceed ANSI Z87.1 optical and basic impact standards. Plutonite lens material filters out 100% of UVA/UVB/UVC rays and harmful blue light up to 400 nm wavelength. The lens curvature and frame architecture improve side protection, while lightweight O Matter frame material resists stress and ensures long-lasting durability. The comfort and performance of Three-Point Fit holds lenses in precise optical alignment. Metal icon accents lend distinctive Oakley style.Grey Lens Suitable for medium to bright light, the Grey Lens features 15% visible light transmittance. This excellent all-purpose lens enhances contrast in sunny conditions and meets MCEPS neutrality and chromaticity requirements.Grey Polarized Lens Suitable for medium to bright light, the Grey Lens features 15% visible light transmittance. This excellent all-purpose lens cuts blinding glare while offering truer color perception.