It is natural cotton batting. I only used this so the stitches could be easily seen. Much of my other scrap fabric is dark. I initially tried taking pictures of the stitches on the flannel fabric I've been using for a quilt, but it was too hard to see the stitches that way. I was hoping this would suffice for now. It probably sounds lazy, but with the addition of two new machines, I had to rearrange my sewing room and it's a darned mess right now. My cotton fabrics are currently packed in a box, awaiting a new home in a newly organized room.