Features: 1.The double design allows you to clean your windows without having to risk standing by the window. It also provides the secure string to ensure the magnetic doesn't fall out of the window. 2.The powerful internal magnets lock the two cleaning sides together so that when one side moves, the other side follows. 3.It can be used to clean windows, fish tank, skylights, patio doors, bedroom windows and even shower walls, mirrors and tiles. Specification : Material: Plastic, magnet, high quality rubber Color: Yellow Blue Thickness: 3-8mm Application: The thickness of the glass must be less than 8 mm. Size: 9.7*10.5*3.1cm/3.81*4.13*1.22in Package List: 1 * Glass Cleaner 2 * Cotton Clean