Microfibers are thin fibers with a diameter of less than 1.0 dtex (1 g per 10,000 meters). In comparison, cotton fibers are three to four times stronger, and human hair is a hundred times stronger. In a special process known as "finishing," multifilament fibers are split into microfibers. This process creates a large thread surface and simultaneously creates cavities in which water is stored. A modern microfiber therefore has many times the storage capacity of a cotton product or other fibers.