Combining the delicacy and absorbency of silk with the durability of microfiber, Vandoren?s swab is the perfect choice for your instrument. The gentle fibers are specially designed to thoroughly clean your clarinet while protecting the delicate finish. -Best humidity and grease absorption available. -Cleans easily with soap and water. -Strong cord with easy pull-through weight. (Not on polishing cloth) -Durable and long-lasting for years of reliable use.