I got hooked on Dream Green poly batting (made from plastic bottles) and when my LQS persisted in always being out of it, I started ordering it online by the roll. I love it. I don't have to worry about letting the fold lines relax, there is very little waste, and it's always there when I need it. If I happen to need a different kind of batting for a project, I just pick up a package in the size I need - usually a craft size.