The microfiber of the ultra-fine fibers securely catch fine dust. The fibers are extremely fine and the edges are sharp. It can be used repeatedly after washing and drying. It is also 100% synthetic fiber so it dries quickly. Dry clean for dust removal such as P tiles and flooring. Length: 7.9 inches (200 mm). Width: 3.8 inches (96 mm) 0. Compatible mop size: 35.4 inches (900 mm). Polyester, nylon.