Natural fibers breath, poly's don't. So Poly's will hold the warmth in more effectively but they do this because they do not breath, and you may find that you are too warm and sweat. Sweating is natures way of cooling you off - but if your skin can't breath - it just keeps sweating. In the end you'll throw the quilt off of you and go from hot, to cold, to hot, to cold ... not good.

Soooo ... I personally would choose a natural fiber every time. If one layer isn't warm enough, then add another. Or instead of two layers of cotton, try wool. But I think allowing my skin to breath is important. I hate sweating!!

Ha - fur is warmer if it's got the skin on it!

Martina, i think i really meant comfortable rather than warmer, my mind goes way faster than my fingers!

I would go with one of the soft and comfy lines at Joanns. I love the Minky and non bumpy minky like fabric. Those are the ones I would use if it was me and then bind in a satin binding. Ohhhh just thinking bout it makes me want to snuggled into ky blankets.

Minkee(Minky) will stay super soft and cuddly. It won't get lumpy, bumpy like fleece will sooner or later...

Fleece is warmer, because flannel is a cotton fabric so it breathes better.

I bought a super soft chocolate blanket the day after thanksgiving. Very soft like minkee. I didn't use any batting or backing. Just quitlted the top to it and then binded it. Turned out great and super warm and cheap!

fleece is softer but it make me feel sweety. It might make you to hot.

My favorite backing is ultra cuddle fabric from Joann's. It is the softest and coziest.

I love ultra cuddle.

Elise