The finished size is 9 3/4 to 10" wide X 15" long for the pillowcase. The pocket can vary from 9 3/4 wide to 10"wide and about 11 1/2 long....sometimes I make the pocket a little smaller if I'm short on the novelty fabric. I use cotton or flannel for the novelty fabric. That's fine with the GKTHW organization. I try to use up scraps when I do the pocket.