Fits 4 Inch X 15 Inch Bona Microfiber Mop Head. Microfiber cleaning pad for the Microfiber Mop. Use dry to attract dirt, microparticles and common household allergens or wet with Bona Swedish Formula Hardwood and Bona Stone, Tile and Laminate cleaners for effective, non-toxic cleaning. Washable for over 300 uses.