Satin is not a fiber like silk, it's actually a weave. A weave is a particular style or manner in how something is woven together, whereas a fiber is the actual material that is being used in the weave. Since satin is a weave and not a fabric, there are many different types. They can differ based on the texture of the material used and any variations in the weave pattern. When it comes to GE products, we use a high quality charmeuse satin on all our products!