With the Radar Path you'll get all the performance breakthroughs of this unique eyewear invention. Features Hydrophobic, a permanent lens coating that prevents rain and sweat from building up on the lens. It also repels skin oils and other contaminates, so the lens is smudge resistant and easy to keep clean. It even eliminates static electricity, so dirt and dust particles wont cling. Choose the nosepiece that gives you the best fit two sizes are included with every frame. Like the stem sleeves, theyre made of Unobtainium to increase grip with perspiration. Oakleys Three-Point Fit optimizes comfort and holds the lenses in precise optical alignment for superior clarity. This pair of sunglasses is made of lightweight O Matter for all-day comfort. Pure Plutonite lens material filters out 100% of all UV, and meets ANSI Z87.1 standards for impact protection. The semi-rimless design means theres no frame rim to block downward view. Optical clarity exceeds all ANSI Z87.1 standards, and patented Polaric Ellipsoid geometry extends razor-sharp vision all the way to the lens periphery.