It's Hobb's 80/20 batting. I'm not sure what happened cause most of it is just fine. It was basted EXCEPT for around the outside edges - I sewed around the inner border, but not the outer one. I was concerned I'd end up with huge puckers, but should have basted it, taken the basting out - then proceeded. To continue pre-soaking I would have had to let it dry and I was afraid it would be worse. Otherwise I would have had to sew through the wet pee - did that a bit sewing down the inner border and that was quite enough.