Well, needless to say that the dryer balls did not felt as I expected. I expect that I may have wound the wool sweater bands too tightly in a ball and there was not enough give to have them felt properly. I wished I had sorted that out before I made so many. So in order to save these and make them usable I have given them all sock covers which will keep them all intact even if they are not felted and they will work just as effectively in the dryer. It is unfortunate that they did come out beautiful but sometimes that it the way it goes. Therese