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Smith Sport Optics sets the standard for high performance sunglasses, goggles and helmets. Smith innovations include the patented Regulator lens ventilation system, distortion-free Tapered Lens Technology, and the versatility of the Slider Series. Smith Optics is synonymous with innovative and top-quality products in the eyewear, goggle and helmet markets.A distinctly unique interpretation of a timeless women's shape, the Sidney combines a round lens profile with a vintage cat eye shape and keyway nose detail. The crisp edges and beautiful, thick faceting disguise the subtle performance detailing just beneath. Constructed using megol nose pads and our feather-light Evolve eco-material, the Sidney provides glamorous elegance in a piece designed to fit comfortably all day long.Medium Fit / CoverageAuto-Lock HingesEvolve Frame MaterialHydrophilic Megol Nose Pads6 Base Lens CurvatureCarbonic TLT lensesLifetime Warranty