Whew, say that three times fast:  "Seatback backpacks!"  ...Yeah, I know:  Impossible.

Anyways, I recently bought a pair of "Hummer Integrated Seatback Utility Packs" off a CHOmie who, unfortunately, sold his H3 and was parting with some accessories.  I gotta say, I am very impressed with them.  Initially I was skeptical that they would fit well or clip in sturdily, but, they are snug and hold probably 5 times as much stuff as the factory "nets" do on the back of the front seats.  On top of that, they don't detract much (if any) from the rear passenger's leg room.  Aaaand, if you need a backpack in a pinch, they have a sling on them because they are actually made to be worn as well as clipped to your seats.  Pretty sweeeeeet...  

So, what is my conclusion?  I would say they are a must for any Hummer owner who wants some more storage space or another piece of Hummer memorabilia that is easily justified to the wifey/gf/angry father.