After a lot of searching for a backpack for my DJI Phantom 3 Professional, I came across this hard shell backpack on Amazon. It was WAY cheaper than the backpack DJI made for their Phantom drones and essentially the same thing.
Below is a video review of this DJI Phantom backpack.
I really like how this backpack houses the drone. It has three battery slots, not including the battery you can also have on the Phantom. If you’re looking for a DJI Phantom backpack, I highly recommend this one.