Microfiber is a revolutionary man-made fabric consisting microscopic, wedge-shaped polyester filaments and a core composed of polyamide (nylon derivative). The same microfiber thread can now be split and woven into a number of loop or waffle patterns that make this fabric incredibly absorbent. For detail purposes, these tiny micro-hook filaments lift and trap, moisture, light dust, polish and wax residues while safely removing them away from the surface.Typically unprocessed (fibers not split) low quality versions have poor water absorption characteristics.Test your microfibers on an old CD. If it scratches the CD, it is possible it may scratch the clear coat.