I have been using satin pillowcases for many years. I wanted to try out a silk one but they are so expensive. This one is mostly silk with a little bit of satin. Wow, what a difference it makes to have the silk in it! It is so much softer that what I have been using. I don't want to go back to my other cases after using this. If you want to keep your face wrinkle free this is the way to go.