The first German man-portable flamethrower, called the Kleinflammenwerfer ('small flamethrower') or Kleif. Fuel is stored in a large vertical, cylindrical backpack container. High-pressure propellant is stored in another, smaller container attached to the fuel tank. A long hose connects the fuel tank to a lance tube with an igniting device at the nozzle. It was the first widely-used man-portable flamethrower design, off of which the American M1 and other flamethrowers were based.