Ultra Microfiber is softer, finer and more absorbent than any other conventional cloth available today. It is preferred for its lightweight, super absorbency and rapid drying. The secret of the microfiber cloth is its state-of-the-art matrix of thousands of tiny fibers; 10x finer than silk and 100x smaller than the human hair. This high-performance cloth attracts and holds dirt, grime mildew, etc. like a powerful magnet, retaining up to 7x its weight.