I just used flannel from Joann’s. I made a flannel and chenille baby quilt for grandson when he was born. Loved it. When he was about 9 he told me it was too short and could I make him another one. I made the same pattern and just added squares to make twin size. It has held up and he loves it. He is 12 now. I did wash and dry the flannel first. He still has the first one. It is still good.