This top quality industrial dust mop is truly made for the "professional". Designed and built to withstand multiple washing cycles while retaining the ability to pick up and hold a maximum amount of dust. We use a unique polyester backing which stays put on the frame because of its sturdy, snug sideload construction. The heart of this dust mop is our carefully blended synthetic yarn with a permanent "set" that resists unraveling. Unlike looped dust mop products, our "heat set" yarn has cut ends which pick up and hold dust much more effectively.