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. You don"t have to be a leader of men to appreciate the respect you will command when you rock these premium shades. The Chief makes a powerful first impression, but dig deeper and you will recognize something more profound at play. In fact, beneath the luxurious Italian finishing and premium features you will find the hallmark quality, performance, and style of an authentic Smith sunglass. Medium Fit/Med-Large CoverageTechlite Polarized Glass TLT LensesEvolve Frame MaterialAnti-Reflective and Hydroleophobic Lens CoatingsHydrophilic Megol Nose and Temple PadsStainless Steel Spring Hinges8 Base Lens CurvatureFrame Measurements 62-14-130