The large fit D1 is popular amongst snowboarders and freeskiers alike. It uses a clean and simple design, fits over optical glasses and has all the features you need to enjoy day-after-day on the mountain. Coming with two lenses so you’re covered for all the conditions you’re likely to face.Lens: Lumalens Blue Ionized + Lumalens AmberVLT: 23% (CAT 2) + 53% (CAT 1)Size: LargeLens Shape: CylindricalMain LensLUMALeNS Blue Ionized – With a 23% VLT this lens is suited for bright light, sunny conditions. The lens has a hydrophobic hard coating to repel water and give added protection. An Ionized finish is used which makes colours richer whilst reducing glare.Bonus LensLUMALeNS Amber – With a 53% VLT this lens is at its optimum in snowy and overcast conditions. The lens has a hydrophobic hard coating to repel water and give added protection.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.