The Skyline XL offers a clean design and uses some of Smith’s top end lens technology but in a slightly larger fit than the standard Skyline. A rimless frame and oversized spherical lens provide a wide field of view. Designed to fit medium to large-sized faces with excellent helmet compatibility.Lens: ChromaPop everday Green MirrorVLT: 23% (CAT 2)Size: Medium/LargeLens Shape: SphericalLensChromaPop everyday Green 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.