I live in Minnesota. After this weekend, I may put two battings in my quilts!! I have made cotton top with cotton backing and batting, I have done cotton tops with batting and flannel backs(very cozy), I have done all flannel top and back with batting. Use two of them last night (minus 20 below outside). Great thing about flannel is that if you get up during the night, it stays warm for a while so when you get back into bed your bed it still warm!!! I have never made a quilt without a batting, but I can see where that might be nice for a summer quilt. It all works.