This is a thin and soft flannel, 2 pieces that are 32" x 80" and 17" x 42". The pattern looks like a swirly "marbled" effect. It comes from Joann Fabrics but I don't know much more than that about it, the selvedge edge with identifying information has been cut off.

Would be great as a backing for a blanket or for a pillow cover.  It's flannel, can think of lots of uses for it!