Replacement Microfiber Cleaning Pad for the 4"x15" Bona X Hard Surface Floor Mop. These pads can be machine washed up to 300 times. Use with the proper cleaner when cleaning your floor. While cleaning, check the pad periodically. When it is dirty, replace with a clean pad or rinse it out in the sink, ringing it out tightly like you would a wash cloth. Don't forget about the Microfiber Applicator Pad and the Star Fiber Dusting Pad that also fit the Bona Hard Surface Floor Mop. It's always a good idea to have extra's on hand.