Window curtains are produced in a variety of materials, all employing natural as well as artificial fibers such as linen, silk, cotton, wool, polyester, rayon etc. Part of the rich appearance of curtains depend upon proper lining and interlining. Interlining is most common on heavier weaves, such as damask, velvet and expensive fibers, such as wool and silk. The rich look is achieved by using silk brocade, damask, satin, taffeta, plush and velvet. All these fabrics are further embellished with the help of prints, dyes, applique work and embroideries.