Fueled by propane, the Pyro suit first fills a metal reservoir up with gas and, at the flick of the wrist, unleashes its flammable payload in one quick burst. On his other hand, Furze has rigged up a pilot light. When the gas is released at a high enough velocity from the reservoir, the flames are actually incapable burning the fuel fast enough to head back up the fuel stream and turning Furze into a flaming ball of fiery death. Considering that Furze has actually lit his arm on fire with one of his past inventions, we're sure he acutely appreciates how safe his new rig is.