Learn more about Costa Sunglasses If you cant visit a tropical beach, at least Costas Anna 580P Polarized Sunglasses give you the style that says youre there. Heavy-duty TR 90 nylon frames along with lightweight, scratch- and impact-resistant 580P polycarbonate lenses ensure a long life. Polarization reduces glare off reflective surfaces. Blocks 100% of UV rays, protecting your eyes. Base curve of 6. Includes hard case. Manufacturers lifetime warranty. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Polarized.