Ultra-fine microfibre cloth for cleaning pianos and for use on other smooth and shine interior surfaces. The cloth can be used dry or damp. In the latter case, just dampen it with water and then squeeze any excess out. With a slightly damp cloth it is possible to remove smaller marks such as fingerprints. Always test on a small inconspicuous area before use. We assume no liability for any scratches that might be incurred. Please take care to only ever use a very clean cloth. Product is machine washable up to 60 degrees Celsius (140 degrees Fahrenheit), do not use fabric softener, can be tumble dried. Material 75% polyester-microfibre, 25% polyamid-microfibre.