Helmet features positive pressure visor seal. It is a completed set, and very rare. You will surely regret if miss it.The item "Air Force MiG Fighter Aviator Pilot Flight Helmet, High Altitude Sealed Helmet" is in sale since Sunday, April 25, 2021. This item is in the category "Collectibles\Militaria\Militaria (Date Unknown)\Air Force". The seller is "felicia567" and is located in China,shanghai. This item can be shipped worldwide.