Serengeti Rotolare Sunglasses Shiny Black Frame Polar PhD CPG Lens Rotolores ultra lightweight design gently wraps around your cranium for a secure fit. Flexible temples adapt for all out comfort, but continually spring back to their original shape. Add photochromic Polar PhD lenses and what more could you ask for Fit MediumLarge Gender Both Base Curve 8 Rx Temple Length 132mm Lens Size 63 x 40 x 64mm, DBL 16mm Serengeti Technologies Polar PhD Serengeti Polar PhD lenses deliver clearly superior eyewear for the ultimate journey, featuring the very latest in polarization, photochromic technologies, exclusive hues and high definition benefits that are near glass in clarity. Our Polar PhD lens is so revolutionary it received the coveted international Silmo d'Or award in the lens category for innovation and performance a first for a sunglass manufacturer. Superior Technology As the maker of the world's finest driving sunglass, we utilize only the very latest technologies and premium materials, coupled with the most talented professionals and designers. And the results are clearly superior. Serengetisunglasses feature unparalleled attention to detail and intelligent refinements, and they exceed government and commercial standards when it comes to protection. They block out harmful UVA and UVB rays, while our advanced photochromic technology adapts to changing light conditionsbehind the wheel and everywhere else you go. All together, our technology is designed so that you can effortlessly see every detail on the road. Frame Nylon Using only the highest quality injected TR 90 nylon for superior durability, these frames have the added benefit of being exceptionally light, flexible and comfortable not to mention highly fashionable. CPG The CPG, or cool photo gray lens, is ideal for all weather conditions, particularly harsh glare. With its exceptional polarization properties, it's clearly not timid when it comes to maximum protection. Available inPolar PhD lenses. The Experience There is only one way to experience Serengeti your way. For you, The Journey is just as important as the destination. As the maker of the world's finest driving sunglass and the pioneer of photochromic technology, we understand and agree. The Serengeti experience is like none other. It's the optimal balance of technology and craftsmanship found only in a signature pair of Serengeti sunglasses, the satisfaction of slipping into the new Karma hybrid by Fisker, and the classic style and genuine charisma of experienced traveler and country star David Nail.