This is a vintage Auburn Tigers seat cushion made by Wincraft.  It measures 13" x 13".  It has a thin 3 5/8" split in the seam along the middle of the bottom where you can see the foam inside.  It could possibly be repaired.  It has some small, light spots on it here and there that's barely noticeable.  Other than that, it's in good shape.  Thanks for looking!