If you order it from Superior you can get it by the yard, about 48 inches wide. There are other sizes pre-packaged. I am not sure about washing, because I have done only wallhangings and have not washe on yet. I will try with a piece and will report later. I don't see why it wouldt stay wrinkled, because once is shrunk I don't think that can change, but you never know. The piece I got was about 18 x 36 for $11 and my LQS ordered it for me a while ago.
Maria