I use 60/40 wool/poly and found that it laid nice and flat and had a good firmness to it as well. haha, I bought a whole roll of the stuff and have found it to not be to my total satisfaction for quilts so am delighted that I have another use for it. By my quick calculations (ahem) I reckon I've got about another 3,000,000 table runners worth of batting sitting under my sewing table....guess what is my default gift idea....LOL!