Boardwalk Super Loop Wet Mop Heads are created from premium-quality, four-ply cotton\/synthetic yarn for maximum absorbency. The industrial strength mop head is designed for high-volume use. Each head absorbs up to seven times its own weight in liquid. Constructed to be more durable with heavy-duty, vinyl headbands. Machine washable. Launder in mesh bag. Use with clamp or spring grip-style handles, which are sold separately.