Microfiber is the way to go; the millions of microscopic fibers trap dust and dirt like nothing else, cleaning more completely and easily than you may have thought possible. The ends of this patent-pending mop flex up or down so that you can dust your floor and baseboard at the same time. You can also use it to dust trim, stairs or ceilings. The thick microfiber twisted nap holds attracts and holds dust. The head may be machine washed and air dried. 54" long; the head measures 13.5" x 5.25"