Uses a newly developed, supple, and highly absorbent proprietary microfiber fabric. It cleanly wipes away moisture and dirt from inside the instrument. The fabric is lint-free, so there's no worry about leaving threads inside the instrument. If the swab becomes dirty, it can be washed with detergent and reused repeatedly without losing its effectiveness. This is being sold as clearance stock of the old model. Thank you for your understanding. The current model is blue.