Just did the search for batting and flannel was mentioned (never though of that). I've seen the packages that say okay for hand or machine, cotton, silk and poly. The quilt is a queen size and will be used in North Carolina. If flannel is used do you do the wavy piecing tech. to make it big enough or should I just use batting and if so which is best for hand quilting (i want the needle to go though like butter!) and what's with this prewashing? thanks Becky