Curtain fabrics are materials used to make curtains, which are window coverings that can be opened and closed. The most common curtain fabrics are ninons, voiles, lenos, and brocades. Ninons are lightweight, sheer fabrics with a smooth texture. Voiles are similar to ninons but are slightly heavier and have a more textured surface. Lenos are made from two sets of yarns that are twisted together, creating a crisscross pattern. Brocades are heavy fabrics with an intricate design woven into the fabric.