I used it for batting on my second ever quilt. I used microfiber fabric to make 18 inch squares (what was I thinking?) King size. Three layers, top and bottom microfiber (very stretchy) - fleece for batting. I wrestled it through my dinky mechanical Brother to stitch in the ditch. It was very doable and the quilt came out great. Very warm. It lays heavy on the body. My recepients like that, might not be for everybody. They took it to the commercial laundry and whatever they did to it there didn't harm it. Have not used it with cotton.