Cleaning your floors just got easier with the CleanSmart Disposable Microfiber sheets! Microfiber sheets REMOVE the dirt, as opposed to string mops that just push the dirt around. These are a great alternative if you are unable or don't want to rinse out microfiber mops. There are 15 sheets/roll, and these fit on the bottom of the CleanSmart backer pad (sold separately) that fits on the bottom of the CleanSmart ergonomic durable flat mop