Thousands of microscopic fibers pick up and hold dust, dirt and grime. Microfiber is a component used in green cleaning-for superior cleaning effectiveness. Promotes green cleaning, promotes water conservation. Hypoallergenic, lint-free, nonabrasive, absorbent cloths eliminate streaking. Contributes to LEED points. Blue color-coded cloths help to avoid cross-contamination. Machine washable. 16" x 16 cloth. 12 cloths per case.