The Maui Jim Sandy Beach combines the best elements of a sport sunglass lightweight nylon frame and polarized polycarbonate lens into functional but stylishly crafted eyewear. The Sandy Beach's lightweight nylon frame is strong, comfortable and attractive the polycarbonate lens adds lightweight comfort and impact resistance. Two layers of Maui Jim's CLEARSHELL coating guard against scratches. Perfect for watersports from deep sea fishing to getting covered at Pipe, Sandy Beach sunglasses feature PolarizedPlus Technology. A polarized lens' primary function is to reduce glare that is, light reflected from a flat surface which greatly diminishes color and contrast. A body of water, a windshield, and even an asphalt road are all notorious producers of polarized light. Polarized lenses are most useful when trying to see through these reflecting surfaces, like when fishing, boating, or driving. Maui Jim sunglasses feature one of the most effective polarized lenses on the market. They are lightweight, tough, and very stylish.