This is a one piece "Sidcot" flying suit 1940 Pattern. The suit was worn by pilots in Britain’s Royal Air Force during World War II. The suit is a redevelopment of the original Sidcot suit from World War I. The suit was first introduced in 1930 and was continually redeveloped until the suit was retired after the war.
This flying suit was transferred to the museum by the Royal Air Force Museum and there is no known information about who wore the suit.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.