An articulated firefighter breathing pack includes multiple polymeric pressure vessels connected together and to a flexible manifold with sections of flexible conduit. The pressure vessels and sections of flexible conduit are encased in high strength fiber material. The pressure vessels are wrapped in high strength ballistic ribbon material. The manifold provides connections for a high pressure regulator and an air fill source. A low pressure hose is connected to the high pressure regulator, a low pressure regulator is connected to the low pressure hose and a mouthpiece connected to the low pressure regulator. A pressure vessel container attaches the pressure vessels, the flexible conduit and the manifold to a harness having a waist portion and two vertical straps extending upwardly over the shoulders and back down to the waist portion. A utility belt provides mounting for equipment for the breathing pack including hoses, a power supply, electronic sensors and controls.