A denier is a measurement of the thickness or fineness of a fiber and is based on the weight of 9000 meters, approximately 30,000 feet, of the fiber. A microfiber has a thickness of less than one denier. This fineness allows the microfibers more movement and flexibility.
Microfibers are lightweight, wrinkle-resistant and their density makes them useful for creating deep, bold colors. They are also useful in clothing, as they resist wind and water and yet are still breathable. In addition to polyester and nylon, microfibers can also be blended with silk, cotton and wool.Learn more about Sewing