The Blitz Musical Instrument Clearning Cloth is a microfiber cloth of synthetic suede. The cloth is chemical-free, non-abrasive, super-absorbent, hypo-allergenic, non-electrostatic, and lint-free for cleaning without worry of scratching. Environmentally friendly. The Blitz cloth is designed to clean by safely removing oily film and fingerprints from metal and wood. Blitz is machine washable and lasts for months maintaining its cleaning power after repeated washing.