The material that Stradivarius owners trust to clean their instruments. The Micro filament used in the Strad cloth is one tenth finer than ASSAM silk, the most finely woven of all natural fabrics. The ultra fine fibrous pores seize oil from finger prints, rosin dust, instrument lubricant residue and dirt without the slightest abrasion. It protects the original finishes and woods of fine violins and guitar and other fine instruments. No cleaners or polishes are required.