The BG Alto Sax Bass Clarinet Bass Flute Silk Cleaning Swab is designed to keep your instrument in pristine condition. This highly absorbent lint-free cloth removes moisture preventing corrosion and damage from repeated use. It features a weight in the swab allowing you to pull it through for a thorough cleaning. Simply wash it at 30°C in a laundry bag to maintain its effectiveness. With proper care the BG Alto Sax Bass Clarinet Bass Flute Silk Cleaning Swab can last up to 1000 laundry cycles.