My entrelac bag is growing by leaps and bounds, and will be about the size of a sleeping bag when I finish it. I have seven more rows to go, and it is already about 15 inches long and 40 inches wide. I'm anticipating (hoping, praying) that the felting will result in a good-sized bag.
If you look closely, you can see a stitch holder with a row counter on it. That should give you some idea of the oversized-ness of this bag!