My first quilt was a flannel trip around the world, 3" blocks. that is what the quilt class I joined was making. I learned a lot - mainly how stretchy flannel is, and have since made a chenille and flannel baby quilt, but washed everything three times on hot, and dried in dryer. Still, that chenille was such a shedding nightmare. Anyway, I have used flannel for backings and for batting on other quilts and haven't had much problem since I wash and dry it three times.