Includes all plastic Pulex T-Bars and microfiber sleeve. Removes dirt effortlessly with little to no cleaning fluid. Since the microfibers are one-hundredth the width of a human hair, they can penetrate into tiny pores, collecting more dirt. The coarse polyester yarn in the sleeve acts as an abrasive while the finer yarn acts as a degreaser and absorbent. The combination of fibers and high temperature finish gives the fabric a significantly improved cleaning power.