Bleach-safe and proven to remove 99.9% of microorganisms. Double-sided design covers up to 500 square feet with one wring of the Clean Water System Bucket. Best for use on smooth surface floors like linoleum or marble. Head Type: Microfiber; Application: Floors; Mop Head Style: Microfiber; Mop Head Size: 17 1/2"l x 12"w x 1/2"h.