I have tried many other slip covers for our couch and none have fit.  I had to send them back.  This one works, although it doesn't fit 100% perfectly.  It works good enough that it looks decent on the couch, but it is a pain to fit it to the couch.  I did wash it ahead of time and washing got rid of the wrinkles.  It washed well.  The only thing I had to iron were the ties on the side.