Try the Legacy muslin from Joann's. it is so soft and silky smooth, not thready at all. I pre wash and it washes beautifully, not much shrinkage. Price is excellent, even before coupon. 45 wide 6.99. 90 wide 9.99 108 ? Wide 11.99 or thereabouts. I think it makes great backing as you can see the quilting well. Try it when you have an extra coupon, I don't think you will be disappointed!