A type of fabric that is similar to satin but a bit more sturdy. Commonly used in bedding and to line drapery panels or outerwear, it has a glossy, silky surface texture. Generally, sateen is made of cotton, but sometimes rayon is used as well. The fibers are woven with a sateen weave, meaning that there is one vertical thread woven for every four or more horizontal threads. Since more of the threads are exposed to the surface, the resulting fabric is smooth like satin.