The D'Addario Micro-fibre Polishing Cloth is a long-lasting cleaning cloth for all instruments that can be used with or without polishes. The Micro-fibre Cloth traps particles deep inside its fibres which are 2000 times finer than a human hair. This eliminates the need for harsh cleansers. D'Addario micro-fibre cloths last considerably longer than ordinary cloths and can be washed multiple times for lasting, repeatable performance you can rely on.