Zerodark 2-in-1 Anti-Glare Car VisorModern Medicine shows that the burning sun, reflection and distance light will seriously affect the binocular vision health and driving safety. If the eyes are often buoyed by strong light, that may cause eye fatigue and mental stress easily. Zerodark 2 in 1 Anti Glare Car Visor filters out 99% of harmful rays, protecting your eyes day and night, blocking the sunshine during the day and resisting the distance light in the evening. Features: Block up