Made from 100% silk, this Jewel clarinet swab is a great choice for both the beginner and advanced clarinetist. As a swab material, silk is a superior choice as it is highly absorbent, lint-free, and compresses easily - reducing the possibility of jamming inside the instrument. Designed to be pulled through the body of the clarinet, Jewel clarinet swabs have a rubber coated weight to protect the bore. - the manufacturer