Turn your glasses into Polarised night drivers Excellent clip-ons with Yellow hi-contrast tinted lenses for clear crisp polarised vision and UV protection. the yellow lenses raise contrast and are excellent for night driving and various sporting activities such as golf. Bull-Dog type clip with rubberised feet to prevent scratching spectacle lenses, very light weight, and features a flip-up system when not required. 62mm x 17mm fits most medium to large sized glasses. Top quality eyewear at lowest online prices.