Fact 1: Wrinkled things don't iron out without some water. Fact two: I know that if you get wool wet, and squeeze it, it will felt and be ruined. Fact three: There is a "wool" setting on the iron. So I have to gulp and do it: spray the thing with water and then apply the heat. It works, pretty much. All the wrinkles do not come out, but I'm afraid of overdoing it. Wool is a funny and interesting substance.
Now, where's the sticky roller?