Demand Silk Swabs are created from the finest Chinese Silk available. Demand Silk Swabs are made with a cotton lining to better absorb moisture away from the exterior of the swab. Demand Silk Swabs are made in a unique envelope design which traps air inside the swab and pushes the silk towards the interior walls of your instrument for more contact with the damaging moisture. Compare silk swabs and you will clearly see the superior design and cleaning action of Demand Silk Swabs! Demand Silk Swabs are black silk.