Satin fabric is smooth, shiny and silky on the outer side and dull on the reverse. Satin is made of 100% polyester fibers. It is a lightweight fabric. It is best for warm climates and times of year. Satin is polyester, but does have a luxurious feeling that is similar to silk. Our satin bath robes and pajamas for men are simple and elegant. They come in a variety of classic prints including paisley, fleur-di-lis and diamonds.