Serengeti Amadeo Sunglasses, Brown/Almond with D Polarized Lens Base Curve: 8; Temple Length: 127mm/Spring Hinges; Lens Size: 61 x 36 x 63.7 mm The Sport Classic Frame give style and confidence. With its versatile brown lens, the Drivers Polarized lens peforms under cloudy and harsh light conditions. Plus, you get the added protection of the Serengeti polarizing technology. 18% transmittance lightened lens/10% transmittance darkened lens.