12 Pack 18" Microfiber Wet Mop Refill Pads for Flat Microfiber Mop Frames Washes over 1000 times. Easy to use and safe for all floors including: Pergo, Hardwood, Tile etc. Microfiber material is very absorbent and efficient at cleaning small particle and debris. Microfiber pad velcros in place. Easy to remove and rinse or machine wash. Eco-friendly, long lasting and sanitary for all applications; ie hospitals, clean rooms, schools, senior care facilities; etc. These Microfiber mop pads measure a total of 20" in length which fits all 18" frames and hardware.