The bamboo batting that I carry, Winline, seemed to shrink about the same as cotton. I have decided that *I* don't really like it in quilts, it seems to have no shape to it. I would, however, recommend it for quilted clothing since it is so drapey. It also seems to be thinner than the other battings that I carry, and is harder to find that sweet spot when adjusting tension so that the loop in the threads (where the top and bottom threads meet) lands somewhere between the top and bottom, so that I don't have loopies on the top or bottom of the quilt.