They are used by Su-33 pilot. There are two flaws on helmet.
I circle them in red. You can see them clearly in the photos. (some countries in South America need more time). Please request revised invoice when you are finished shopping.I will send you a combined invoice. The item "Retired Air Force Heavy Fighter Su-30MK2 Pilots Flight Helmet TK-12A, Oxygen Mask" is in sale since Wednesday, May 1, 2019. This item is in the category "Collectibles\Militaria\Surplus\Hats & Helmets". The seller is "felicia567" and is located in China,shanghai. This item can be shipped worldwide.