The Range goggle is part of Smith\'s Airflow range offering lens venting and combining decades of technological innovations to provide clear vision in even the toughest of conditions.Lens: Ignitor MirrorVLT: 35% (CAT 2)Size: LargeLens Shape: CylindricalLensIgnitor Mirror – A universal lens tint designed to reduce eye fatigue while enhancing contrast and depth perception. Suitable for a wide range of conditions with a 35% VLT.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.