Serengeti Sunglasses Cetera 7340 Dark Tortoise Brown Drivers Polarized Photochromic Grey to Clear Gradient Brown Mirror safeguarding your eyes from the Gradient Dark Grey safeguarding your eyes from the sun's harmful rays Lacoste Sunglasses L6000S 300 Green Blue Gradient delivers a balance of durability and modern design Serengeti Sunglasses Cetera 7340 Dark Tortoise Brown Drivers Polarized Photochromic are a wrap around sporty sunglass with a lightweight durable construction and this model has the standard Drivers lens which is the cornerstone of the Serengeti lenses range with the superb optical performance and Spectral Control given by the superb manufacturing technology used by Serengeti to make these amazing photochromic lenses