Libman Gator Mop. Extra absorbent cellulose sponge surface cleans and absorbs better. Scrub brush breaks down tough dirt. Easy pull to wring handle removes more water and leaves floors drier faster. Its redesigned, super simple sponge snaps into place without any fuss.Extra absorbent cellulose sponge. Dries fast and absorbs water quickly. 9" wide cellulose sponge design snaps right into place. 5" attached scrub brush made from pet bottle flakes.