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The most stylish, sport semi-rim out there, the Seventh has a flat top to give it a more casual appearance than its more aggressive-looking peers. And it does this without sacrificing the performance benefits that make semi rims so popular for athletic endeavours. In fact, the Seventh performs better than many frames out there because of its fully-adjustable, hydrophilic nose pads and temple tips that allow you to custom fit the frame to suit your face, your helmet and the desired amount of airflow behind the lens. Photochromic Lenses When the sunlight changes, the tint changes. The science behind it is complicated but the result is as simple as that. Each Photochromic lens contains millions of organic molecules that react to UV light. When exposed, the molecules change shape, absorbing light and making the lens darker. When there is less UV light, the opposite reaction takes place and the lens tint becomes lighter. Like all of our lenses, our Photochromics are impact resistant and optically correct with 100% UVA, UVB, UVC protection.