Planet Waves Microfiber Polishing Cloth is a durable cleaning cloth suitable for all instruments that can be used with or without polishes. Planet Waves Micro-Fiber Cloths trap particles deep inside their fibers, which are 2000 times finer than a human hair, eliminating the need for harsh cleansers. Planet Waves microfiber cloths last significantly longer than ordinary cloths and can be washed multiple times for lasting, repeatable performance you can rely on.