the warmest quilt I ever made, and I still use it, but only in the winter...was filled with an old fleece blanket that I was recycling. Man that thing will toast your toes and the tiny holes made by the needle and thread just seem to seal up on their own. Now I recycle fleece blankets into all the baby blankets I can. Machine quilts up nice too and no shifting with use so it can tied. The other thing is not to quit it too closely. You need some air pockets to trap warmth. Puffy is good for getting a warm quilt.