WW2 British RAF Flight Suit Liner Size 4 Air Ministry Marked

The WW2 British RAF Flight Suit Liner Size 4 is a standard issue garment designed for use by Royal Air Force personnel during the Second World War. Manufactured under the oversight of the Air Ministry, as indicated by the official markings, this liner was intended to provide an additional layer of insulation and comfort beneath the primary flight suit. The Size 4 designation refers to the specific sizing used during this period, suitable for certain height and chest measurements according to wartime regulations. Constructed from durable and warm materials, the liner features button or snap closures and reinforced stitching at points of stress. Issued primarily to pilots and aircrew, it played a crucial role in maintaining body temperature during high-altitude missions conducted in unheated aircraft. The presence of the Air Ministry stamp signifies authenticity and adherence to official RAF specifications of the era. This liner represents a typical example of RAF flying equipment from the 1939-1945 period.