The SmartColor MicroMop system replacement mop heads are for use wet or dry. These mops feature agressive cleaning edges that clean with less water, less streaking and less effort. Reduces bacteria by up to 96%. Absorbs 6x own weight for effective liquid pickup and retention as well as easy rinse. Long lasting and durable, the MicroMop can withstand machine washing and drying up to 500 times. Choose a color for designated area or task to coordinate with the Unger SmartColor system.