The Showcase provides superior helmet and eyewear compatibilty along with some of Smith’s best lens technologies. One of the most popular goggles of choice for those who wear prescription eyewear and are looking for a smaller fit goggle.Lens: ChromaPop everyday Violet MirrorVLT: 23% (CAT 2)Size: Women\'s SmallLens Shape: SphericalLensChromaPop everyday Violet Mirror – With a 23% VLT Smith’s highly-versatile everyday range of lenses are designed for medium to bright conditions with a mirror coating to reduce glare.Visual Light Transmission, VLT, refers to the amount of light that penetrates a lens. A low percentage means less light passes through and a higher percentage lets an increased amount of light through. A lens with a lower VLT rating is better for bright conditions, where as one with a higher VLT is more suited for overcast and snowy days.