Enimay Women's Heart Shaped Sunglasses Novelty Costume Fun Fashion Celebrity UV 400 Metal frame Plastic lens Non-Polarized Lens width: 6 centimeters Comes with FREE Micro Fiber Bag Lenses meet ANSI Z80.3 blocking requirements. Flex Fit Frame The tint of the lens has nothing to do with the UV protection of the glasses. A clear lens with no tint and 100% UV protection is better for your eyes than dark, heavily tinted sunglasses without UV protection. UV 400 protection. (These block light rays with wavelengths up to 400 nanometers, which means that your eyes are shielded from even the tiniest UV rays.)