VanDuck 15x8'' Pack of 12. NO STATIC Mop Refill. Static electricity attracts a lot of dust after cleaning the surface with synthetic/microfiber materials. VanDuck mop cover won't generate static electricity compared to synthetic and microfiber mops, because it is 100% COTTON. VanDuck Large Mop Covers Terry Cloth Refills. Pack of 12. Fits Bona, ShMop, O Cedar and 15in x 8in mops. 100% Finest quality COTTON mop refills, THICK and STRONG material. 100% Cotton has maximum cleaning efficiency, maximum water absorption, hair and dust gathering (compared to common microfiber materials). VanDuck mop cover will never shrink after numerous washings because it has an EXTRA SPACE at its edges. Strong double-sided elastic helps your mop cover to serve longer. Cleaning Cloth with best absorbing quality. Washable up to 150 times. Ideal for hard flooring, laminate, tile. It fits all 8 x 15 inches Flat Mops. NO STATIC Mop Refill. Static electricity attracts a lot of dust after cleaning the surface with synthetic/microfiber materials. VanDuck mop cover won't generate static electricity compared to synthetic and microfiber mops, because it is 100% COTTON.