Constructed for intensive laundering and rigorous use, these exceptionally high performance dust mops are pro-laundered and ready-to-use direct form the factory. Superset yarn virtually eliminates yarn frazzle and untwisting, while delivering maximum dust pickup and containment. An extended service life is insured by Ha-Ste's highest quality durable, synthetic backing in a fast drying tufted style. Individually polybagged in cartons of 12.