Jean Clean Disposable Blue Blend Treated W/Dust N" Shine 18" x 5" Dust Mop Cotton/Synthetic Blended Yarn Yarn constructed of reconditioned denim and other textile materials that is more durable and absorbent than standard cotton yarn. Cotton/synthetic polyester yarn provides performances and durability. Colored yarn hides dirt. Pre-treated with Dust N' Shine to maximize dust collection and retention.