Ray-ban cats 5000 classic glass sunglasses are a reinterpretation of the iconic aviator. These ray-ban sunglasses offer a similar look and style to the original ray-ban classic, but instead of the classic metal frames, they feature lightweight propionate injected plastic frames for a bigger, bolder look. Created in 1937, the classic lens was originally developed for military use. These lenses offer a high degree of clarity, comfort and protection, blocking out a majority of blue light and prevents 85% visible light from passing through the lens. These updated aviator sunglasses offer optimal comfort and 100% uv protection to safeguard your eyes. Cancer and reproductive harm- www.p65warnings.ca.gov. Type: non polarized.