Double-sided microfiber mop combines the best features of microfiber mops and string mops. Bleach-safe. Clean floors 20% quicker than a traditional string mop. Leaves behind a streak-free clean. Superior germ-removing microfiber is proven to remove 99.9% of microbes. Durable mop head withstands up to 1,000 launderings. Head Type: Microfiber; Application: Floors; Mop Head Size: 18"; Mop Head Color: Light Gray.