The curtains are of solid heavy material. We really like the subtle patterns that give the curtains more character than a solid color. They do an excellent job of blocking light out if that's what you are after. We were able to get most of the wrinkles out of the curtains by using a traditional iron which took a little bit of time since we bought the largest available size.We bought 4 sets and we experienced two minor issues. One of the curtains (of the 8) had a black streak across the outside…

Has wrinkles, but I can iron. Love the thick quality of these and super soft on the underside! Definitely will retain heat in room! Definitely black out curtains.