Replacement Mop , replacement covers for Hurricane Floating Mop, package contains 2x polishing sleeves, 2x Scouring cover, 2x Microfiber cover, Polishing pads: 80% polyester, 20% nylon, polyurethane sponge, Microfiber pads: 80% polyester, 20% nylon, polyurethane sponge, Machine washable: 100% polyester