This dust mop head is sturdy and made from a four-ply cotton/synthetic blend. It has looped ends as well as reinforced backing ends and reinforced stress points for extra durability. Wash it and reuse it. It is easy to use with a slot top/clip-on closure. Head Type: Dust Mop; Application: Floor Maintenance; Mop Head Style: Looped End; Mop Head Size: 18 x 5.