I made wool quilts using a closetful of wool jackets and pants left when my daughters departed from home. They were simply wool squares, batting was polyester, and a flannel backing. They were tied so they were puffy. They held the heat surprisingly well and everyone wanted them when they came in from the cold so they could warm up. Have also used the old double knit polyester with a light poly batt and fannel or sheets for the back and tied. They were also very warm. You could use double batting if you wanted or a fatt batt to increase the loft. Don't quilt too closely or simply tie. Denim works well with a light batt and a flannel back.