A sateen or horizontal satin drapery fabric with horizontal (weft) slubs which imitate spun shantung silk. It is typically composed of approximately 60% rayon (the face yarn fiber) and 40% acetate (the back yarn fiber). Most fabrics are one color from a selection of thousands. Occasionally the warp and weft yarns are dyed different colors to give an iridescent effect. Antique satin may also be printed. It is also suitable for bedspread fabric as it can be quilted.