What is it? 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 properties. 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. These high-performance cloths attract and hold dirt, grime filth, etc. like a powerful magnet, retaining up to 7x its weight. How to use: For glass or shiny surfaces: Moisten cloth in water, wring out until damp, and wash the desired area. Drying is not necessary, wet streaks will disappear. For other purposes use: Wet or dry, as desired. When streak remains, cloth may be too wet or may need to be cleaned. Caring for your microfiber cloth: The cloth is machine washer and dryer safe. For maximum longevity, wash with warm soapy water, and rinse well. We do not recommend using bleach or fabric softener, since this may clog up the fibers.