I got it at a local quilt store. You can get it online, too. The whole quilt is lighterweight - well as much lighter has it can be w/ a double weave flannel as the backing!!
The quilts that I have used Warm & Natural as the batting are heavier - but I know my mom sleeps under hers and says it is warm. I would have never known there was a difference if I hadn't done this current project.