This airtight helmet is essential for flying at high altitudes. When the aircraft cabin is depressurized and ejected, it saves the pilot's life. Similar pressure masks were used on high-altitude interceptors, such as the MiG-25 and MiG-31. For astronauts, this helmet was indispensable when training for overload and ejection at high altitudes. The item "USSR High-Altitude Space Pilot Helmet Soviet GH-6+Documents+Case+Spares" is in sale since Wednesday, April 14, 2021.This item is in the category "Collectibles\Militaria\Militaria (Date Unknown)\Air Force". The seller is "fossilkz" and is located in Aktau. This item can be shipped worldwide.