Satin bed covers ar very bright, shiny in appearance and the fabric is very smooth and wrinkle free Originally satin was made only from silk but now some satins are mixed with polyester, rayon, spandex and cotton . Charmeuse Satin is a finely-woven satin fabric polyester This luxurious feel is a tremendous improvement over all the polyester satin sheets that were previously available. Charmeuse satin offers the smooth, silky feel of Bridal satin Sheets have no center seams and wash well