Microban technology is built into the sponge during manufacturing so it provides continuous protection that won't wash off or wear away for the life of the product. The Quickie Sponge Mop Refill cleans more floor in less time than other sponge mops. The 30cm wide sponge is made for the professional cleaner. A cellulose sponge, maximises the absorbency you need for a quick, thorough clean. The cellulose provides deeper cleaning on hard flooring surfaces and absorbs more water off the floor with fewer mop passes, meaning your floors dry faster! Not to mention, this mop works well on tile, grout and any other uneven floor surface. The patented built-in front blue scrubber (included) helps remove scuff marks and stubborn stains. The refill attaches with two threaded posts moulded into a grey bar attached to the sponge and secured with blue plastic wing nuts.