Designed specifically for escaping from hazardous areas with toxic gas or oxygen deficiency, the main components are from Germany. It utilizes compressed air supplied at a constant flow rate, but operation is very simple: just open the device, put on the hood, and evacuate. The complete set includes a 2L, 20MPa carbon fiber composite cylinder, a pressure reducer/cylinder valve, a hood assembly, a harness, and a packaging box, providing at least 10 minutes of escape time. Manufacturer model: 10192758, packaging specification: 1 unit/box, cylinder capacity: 2L, cylinder inflation pressure: 20MPa.