There's nothing fancy about these bold, hardworking frames-they're just eye-catching. Made of a durable nylon and with sturdy integral hinges, they're as tough as they look. Costa 580 lenses use patented technology to cut down on the yellow light, allowing the eye to see more red, blue, and green. Simply put, they're the most advanced glare-beating polarized sunglass lenses on the planet, and they'll change the way you see, period. The yellow light near 580 nanometers is particularly difficult for the eye to process, so these polarized sunglasses block it, which offers sharper contrast, better definition, and enhanced colors in any environment. Large fit with medium coverage. Black frame with blue mirror lenses. Imported.