Microfiber (80% polyester, 20% polyamide) Machine Washable Up to 150 times. Mop Refill Pads Fit Swifter Sweeper Mop size 10,3'' x 4,4'' Reusable Pads Replace Hundreds of Disposable Wet Pads & Dry Refills For All Floor Types. Slide Easy and Work Smoothly Even on Hardwood Floor and Laminate Water Absorption. Reusable Refills Used as Wet Mopping Pads or Dry Dust Mop Pads Mop is Not Included. Not for Spray Mop. Not for XL Mop