The plaid or checkered fabric is polyester with the look,feel and finish of pure silk dupion fabric. Any layman would pass it off as pure silk fabric because of its elegant look. We are specialized in checks or plaid curtains, when 2 or more hung together the checks match in a straight line. The grommets or eyelets are rust proof as they are made of nickel coated brass metal. The drape is lined with cotton fabric and also weighted at bottom. Dry clean recommended.