The MFO1-F Fit-Over Sunglasses by Montana Eyewear are designed for those who wear prescription glasses but need outdoor protection. The matte black polycarbonate frame is lightweight and durable, offering a comfortable fit over your prescription eyewear.These sunglasses feature polarized Cat. 1 yellow lenses, which help reduce glare and improve contrast, especially in low-light conditions. The yellow tint is particularly beneficial for night-time driving, foggy weather, or dusk, as it brightens your surroundings and enhances visibility, giving you clearer vision on the road.With a lens width of 59 mm, bridge width of 12 mm, and temple length of 130 mm, the MFO1-F provides a secure and comfortable fit. A hard case and soft pouch are included to protect your sunglasses when not in use, ensuring they're always ready when you need them.