Ernie ball Guitar Polish Cloth and Polish Ernie Ball’s proprietary polish formula is oil-free and won’t leave a powdery residue on your instrument. Spray on the cloth and wipe off in a circular motion for a streak-free shine. Safe on most woods and finishes. Contains silicone. Comes with 12 x 12-inch grey Microfiber polish cloth with stitched edging. Washable.