The SmartColor™ MicroMop syetem replacement mop heads are for easy use wet or dry. These mops feature aggressive 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. Use this mop with the SM40G holder (not included). Use the medium duty 7mm pile for vinyl or sealed floors without grout lines. Also available in 15mm. Size:16"/40cm Available in Red, Yellow, Green, and Blue.