Nine Forty Industrial | Commercial Strength Non-Woven Synthetic Cut End Floor Cleaning Wet Mop Head Refill | Replacement (1 Pack, Large) Large Wet Floor Mop Head Replacement is Made in the USA from Rayon / Synthetic Blend Material Extremely absorbent Material Improves Floor Cleaning Performance | Cost Less and Out Performs most mops for floor cleaning | Does not Unravel and Leaves Less Lint than Cotton or Rayon Heavy Duty 1.5 Inch Mesh Headband Allows the Cloth Mop Head to Dry Quickly Preventing Mildew also Extends Mop Life | Use with standard mop handle Mop Refill Works Great on Industrial | Commercial | Residential Surfaces; works best with standard janitorial floor cleaner and mop bucket with wringer Laundry instructions provided in package | Not designed to be machine washed | Please see B00RWBG5MC for machine washable mop head