Designed for men and women who want a great fit plus high performing polarized lenses, this 57mm Lenses Revo Otis sunglasses feature a classic modified square shape, anti-slip nose pads, a patented acetate frame and Revo’s High-Contrast polarized Serilium Lenses. It’s the perfect style for all of life’s everyday adventures. The Revo SurfacePro Protection System includes Revo exclusive mirror coatings, Revo Back-Surface Protection Coating, authentic Revo hydrophobic coating, and authentic Revo oleophobic coating. The Revo exclusive mirror coatings has 3-6 layers of high-tech, performance mirror coatings based on NASA lens technology used for satellite protection and Revo back-surface protection coating. The authentic Revo hydrophobic coating is a permanent coating on the back of the lens that repels water and sweat while the authentic Revo oleophobic coating is a permanent coating on the front of the lens that repels oil and fingerprints.