CarPro - Car Care Products - FlyBy30 Full KIT - 20 ml Description Ease of use Value: Estimated consumption per complete car windscreen and side windows is 10ml Perfect Clarity: No haze, smears, or stains Provides safe, and high visibility driving in poor weather conditions High water drop contact angle (112 deg.) & low sliding angle (15 deg.) promise fast repellency. Water repellency on windshields will last minimum of 6~8 month (1 season). Beyond that rain drops will continue to repel but at higher speeds. FlyBy30 repels water drops starting at 30 to 40 mph, and allows you to have clear vision with safe driving. * Speed varies based on windshield angle, average tested on 45 deg. Angle) FlyBy30 can be used on all car glass allowing safe driving in the rain with clear vision all around.