I mainly use poly batting, holds up great. I don't pre wash batting and I love the crinkly look I wash all my finished quilts and dry them. Connecting Threads batting is too thin for my liking, I buy a high loft poly batting, not as high as the manufacterer thinks. Very warm without the weight. It has been talked bad about, but, those remarks are not right. My Son has two quilts I hand quilted probably 38-40 Years ago, most of the fabric blocks are gone but the poly batting is still perfect, looks new.