AGraffSupplies on Etsy. I fussed with it multiple times, trying different needles, threads, settings, etc., and ended up stitching these mofos by hand. Not really worth the extra time in my opinion, but it does make it look "store bought"...in a good way.
Here's Jamie's version with the zipper pulls:
Again, I used the double tabbed zipper. I wish it were metal, but I like that you can put a lock on it when travelling.