Originally Posted by
invisiblehand
Those are neat little bags on the rear rack. And it appears that they remain on while folded. How much stuff can you fit in them?
-- Your Arlington neighbor.

It seems to be this:
http://www.axiomgear.com/product/bag...duct.php?id=84
Pretty good idea to use a handlebar bag for the rear rack. It claims a 5 liter capacity.