Here, you can see that the chestplate is attached to a metal "backpack" box, and a small water, or fuel tank to dangle beneath it. I have chains that attach to the back, and hook up to the fron to hold it all together. Everything is hand-made from basic metal stock and scrap I could scrounge together! I even sewed the frickin' coat from some patterns I bought. (It's pretty bad, really...) The Harness is the only thing I bought as is... you can see the company logo sticking out about the metal box...