The Essex Protective Breathing Equipment, or PBE, supplies oxygen to crewmembers through the use of compressed aviator grade oxygen. The smoke hood dons in only 15 seconds. It provides a minimum of 15 minutes of protection with a visibility of 270 degrees. The PBE has a 10-year shelf life and has a variety of packaging options. This lightweight device takes very little stowage space and is currently used by nearly every U.S. commercial carrier, as well as many airlines in Europe, Asia and South America.