Microfiber contruction picks up dirt, dust and wet messes with ease. Elastic neck fits securely to most brooms & mops up to 11". Goes directly from sweeping and mopping to the washing machine. 90,000 Fibers per square inch lifts and holds dust, dirt, grease & spills. Absorbs 8 times its own weight in water. Assorted colors. 24/inner and 48/case.