What is a VLT rating?
VLT stands for visible light transmission. A VLT will help you determine how much light is blocked from that lens. The higher the percentage, the more light is transmitted through the lens. For example: if a VLT is 85%, it’s a clearer lens that will block only 15% of light. Which would be great for night skiing or cloudy days, but not sunny ones. If you have a lot of sun in your area, you would want a lower VLT percentage.