The wings from The Rapture.  The rear of the wings.  In the top center is the manifold black, valves, and adjustments for the cylinders.  Just below that is a regulator that drops the output of a 12 gram CO2 cartridge to 100 PSI.  As it appears this unit is quite comfortable and under 10 pounds.  A belt strap, and two backpack style straps hold it in place well.  The control box connects to the electronic valves via a CAT 5 cable with the appropriate connectors added, and is mounted just below the back plate on the actor's costume.