It had to be a good piece of fabric with no creases. You erase them and they become more crumpled than a piece of curled copy paper. Trying to open them after washing is not the easiest thing. I was really disappointed with the way they cleaned up. I used to have such products and no longer gave them to my grandson. I wouldn't buy them again. I really like it when the handkerchief is nice and wrinkle free.