Rapha Letras Photochromic BMU01XXSMKXXX

Rapha Letras Photochromic Sunglasses Made to provide visual clarity in ever-changing light conditions, the Rapha Letras Photochromic Sunglasses can take you easily from low-light overcast conditions to bright sunshine. Featuring proprietary lens technology to improve contrast and Rapha's Freeform lens shape, the Letras offer a far superior fit than a traditional curved lens. The result is better coverage, with UV rays less likely to get behind the lens, and a wider, uninterrupted field of view for optimal clarity tuned specifically for cycling performance. The lens also features a hydrophobic coating to prevent water and mud sticking and the anti-fog and anti-scratch finish maintains a clear view for the long haul.  Weighing a mere 28 grams thanks to the frameless design, the Letras sunglasses are barely noticeable when on while MEGOL™ arm grippers provide a reassuringly secure fit even in the wet. A choice of interchangeable nose pieces lets you tailor the fit and the strategically placed ventilation prevents overheating and fogging.  Lens Specification Photochromic lenses adapt to light levels, darkening in bright sunlight and lightening in low-light conditions Contrast-enhancing lens technology helps identify hazards and adapt to changes in terrain and light conditions Military-grade anti-fogging and anti-scratch finish Water-repellent hydrophobic coating Light transmission Photochromic lens - for variable conditions (dawn to dusk) - Category 0-3 transmittance