Ryders Photochromic Sunglasses Powered by the sun, Protection from the sun The scientific explanation : Each PHOTOCHROMIC lens is infused with millions of organic molecules that react to UV light. When exposed to sunlight, the molecules change shape, absorbing sunlight and making the lens darker. When there is less sun, the opposite reaction takes place and the lens tint becomes lighter. Developed in France by world leader Essilor, and incorporating their patented Active Cell Technology, Ryders PHOTOCHROMIC lenses are optically correct and ideal for activities taking place over a prolonged time, where the intensity of sunlight is likely to change due to weather conditions. The real world explanation : The brighter it gets, the darker the lens gets. And if it gets cloudy, the lens will lighten. Simple stuff really. So, no matter what the day throws at you, you will be seeing it in the best light. “Ryders Eyewear appealed to me at first because of price and the style of course. I put them on and they fit perfectly, were super light (my favorite thing about them) and the lens was super clear. They never fog up either, which is key when running. When something is perfect, why look anywhere else, right?” Karl Meltzer – World Class Endurance Runner

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