Keep cleaning effectively with the Tornado Spin Mop(TM) System Refill. This large microfiber, machine-washable mop head is a direct replacement for what is included in the box. Whether you are replacing a worn-out mop head or just want a spare while you're washing your primary mop head in your washing machine, this refill will keep you in the cleaning game. | LIBMAN Tornado Spin Mop System Refill