The microfiber glass cloth is perfect for windows, mirrors, glass tables and the car. You can cut through that film that gets on the bathroom mirror or that awful foggy haze on the car windshield with just water and this cloth 90 % of the time. Of course you can use your favorite class cleaner! You'll just use less of it by letting the cloth do the work. No lint like with paper towel or awful black ink from newspapers and you'll cut back on chemical contact too.Set of two blue 16"x16" cloths.