My fabulous friend A gave me a reason to experiment with this size.  It measures approximately 14″ W (top) x 9″ H x 6″ D.  It really is large enough to use as a diaper bag.

For the pockets on this one, I made them the length of both sides of the inside.  In the future, I’ll do that on one side, and do smaller pockets on the other side.

At A’s request, I put a pocket on the front of the bag and it closes with a magnetic snap.  I need to experiment with this a bit more before I decide to add it to my regular list of options.  It was really hard to get it centered.  Sounds weird, but it’s true.  I’m a perfectionist, and I don’t like when things are a bit off!

And the inside: