100% cotton batting will give the crinkly, vintage feel. It will be flat and depending on how tightly the quilting is, it might be a little stiff. There are different lofts of cotton batting and they get warmer and heavier as the loft gets higher. Wool batting has a wonderful high loft and is very warm. It is very puffy so it won't get as "crinkly" as cotton. I usually use a medium loft cotton batting from Quilter's Dream. If it's a little chilly I just throw 2 quilts over me
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