A friend who is a long arm quilter loves Warm and Natural batting because she says it's very stable and behaves well when it is being quilted. My conclusion regarding her statement is that it must be a pretty stiff, firm, inflexible batting if she's in love with long arming it. I avoid it for that reason. I don't know about the shrinkage factor of Warm and Natural, but there are some cotton battings you can pre-shrink, like Hobbs 100 percent cotton. Just follow the directions on the package.