Oakley plazma carbon photochromic sunglassesinspired by the iconic racing jacket sunglasses, the oakley plazma carbon photochromic sunglasses help you take your sporting performance to the next level.the glasses have a lightweight dual lens sport frame which has a functional sport design with a three point architecture which is designed to hold eyewear in precise optical alignment. Optimising your vision in a range of environments, the photochromic lens automatically adapts the light transmission to adapt to different lighting environments.lens specificationslight transmission 23%light transmission activated 23%light conditions changing conditionscontrast neutralbase lens colour clearfeaturesfunctional sport design with optimised coverage, wider field of view, frame retention and impact protectionstrong yet light o mattertrade frame provides durability and all day comfortunobtainiumreg earsocks and nosepads help provide sport level retention with a no slip grip and all day comfortphotochromic lens technology automatically adapts the coverage to best suit your current lighting environmentbuy oakley sunglasses from chain reaction cycles, the world's largest online bike store.