The D'Addario polishing cloths are made from high-quality double napped cotton flannel which picks up dust and dirt more effectively than ordinary polishing cloths. Made from high-quality double napped cotton flannel Picks up dust and dirt more effectively than ordinary polishing cloths Long Lasting Essential for complete guitar care Machine washable From ultra-smooth cotton to lens quality micro-fiber, Keep your instrument's finish clean using a variety of D'Addario polishing cloths.