Night Vision Lens Polarizing coating effectively reduce the annoying glare, making the views look soft without dazzling to help you see road more clearly on foggy or snowy days. Night vision glasses are suitable for night driving or special weather such as fog, cloudy, rain and other low-light conditions! Night vision lenses make everything yellow to protect your eyes, but they CAN'T block all the glare! Due to different visual sense, people have different feeling about glare, some people may not detect the reduction of glare! Polarized UV400 Lens Anti glare from road, water and glass wall cause by sunlight reflection and block harmful UVA and UVB radiation from the sunlight. Clip on Design Specially clipping on your existing glasses, save many troubles for those who have to wear prescription glasses. Flip up Feature You don't have to take it off when you don't use. Easily flipped down or flipped up when you are driving, biking, climbing. Size: Lens height: 41mm/1.61inch Lens width: 60mm/2.36inch Nose bridge: 15mm/0.59inch Notice: Do Not view the Sun directly. Clip on glasses is not suitable for double nose bridge glasses. Please remove blue filter before using.