nativelohaus

hey everyone, i was wondering what people had to offer for suggestions for backing. i just finished some cuffs and leg bands for my son. they are lazy stitch. i asked around and people told me to back it with canvas and some plastic/cardboard/stiff material in between the 2 canvas' to help keep its shape. then go around the edges with some sort of tape. can't remember the name off hand. anyway, i was hoping to get some good suggestions as to what works the best and what kind of material presents problems or what to avoid. any help would be greatly appreciated because it took me a while to finish them. thanx much.