I love, love, love wool batting. All the things that Doghousemom described for wool applies ta the wool batting. It is a li'le bit fluffier than cotton, but some poly's are a lot fluffier than either wool or cotton. It makes up for the cost by bein' the best ta hand quilt through. The needle slides through it like butter. I git much better stitches w/wool. I try ta buy it on sale.