You can use something like warm & natural batting and quilt it to the fabric. When I do this (instead of the fusible fleece) I add Decor Bond fusible interfacing to the lining. That gives the stability. I don't care for Decor bond on the outside, usually, since it seems more like cardboard. I get my fusible fleece at Wal Mart. The kind they carry is thicker and cheaper than I can buy a J's.