Like my grandparents, these panels are wrinkly but good. I was a little concerned about having to iron them, but once they were hung, I lost interest. They don't look bad wrinkled.
They're lined and definitely darkened the room considerably, and even helped cool it off. I'm planning on purchasing one more set. Yes, I have a lot of windows. I chose grommet-tops because it really makes it easy to open and close them without complicated mechanisms.