Antimicrobials inhibit bacterial growth and help mop heads last longer 100% cotton content from post industrial use 100% blue and green polyester yarn are post-consumer PET Launderable mop head is ideal for healthcare applications. Four-ply balanced blend of cotton and synthetic yarn withstands repeated launderings without shrinkage. Looped ends and tailbanding reduce tangling. Made with recycled fibers. White yarn, prelaundered and preshrunk. 6 mop heads per case.