【Anti-ultraviolet】Yellow boards are suitable for use at night, while black boards are suitable for use during the day.Continuous ultraviolet radiation can cause irreversible damage to the eyes. This anti-glare mirror can block ultraviolet rays during the day and prevent glare at night

【[Dual-purpose for Day and Night】 It can effectively prevent dazzling lights that interfere with driving, such as the blinding sunlight during the day, the headlights of oncoming vehicles at night, and the reflected light of rain and snow. It can achieve the same effect as wearing sunglasses. Since it can reduce the unpleasant dazzling light, it allows you to concentrate on driving, making your trip safer.