NuPolar® Infinite Gray™ polarized lenses are lighter when they need to be, and darker when the wearer needs it most. The darkness of the lens is controlled with a new UV-responsive photochromic technology that offers the widest range of light absorption of any polarized photochromic lens. Now available in polycarbonate from optical laboratories. Eyecare patients: Ask your optical professional about NuPolar Infinite Gray polarized photochromic sun lenses.