Most damage to your paint and windshields is done by rags and sponges. MICRO FIBER CLOTHS are the least abrasive material you can use to wash dry or polish. Ninety thousand fibers per square inch, enable you to wipe down surfaces without scratching. While keeping swirl Mark's to a minimum. The cloth picks up material and takes it into the cloths, unlike cloth diapers, terry cloths or any other rag..