These are 100% wool pads made for going under a saddle. They are flat when you get them and this one is 30x30 inches for $23.54 US plus shipping.
Under "Reviews" there are quite a few from quilters saying they love it!
I guess I'm not the only horseperson/quilter.
Watson
https://www.statelinetack.com/item/m...ner/SLT901243/