There is a big misconception about what satin actually is. Satin is a type of weave used to create fabric with a lustrous and glossy shine. However, when people talk about satin, they are often referring to satin weaves using polyester or other synthetic materials. Silk also uses a satin weave, however, is woven with a natural fibre produced by silk worms, making it high quality and luxuriously soft.
Both mulberry silk and polyester satin are known their smooth texture, however there is a difference. Satin has been referred to as being slippery while silk is buttery soft. Because polyester satin is made from plastic, it can feel more course and brittle. A single thread of silk is approximately 1/10 the width of a human hair strand, which means these tightly woven silk threads make silk light and soft.