Iconic World War II-era Irvin Royal Air Force fleece-lined leather flight jacket, the standard issue flying jacket used by British air crews during wartime. Made from heavyweight sheepskin with a thick natural wool insulation, the jacket features a wide collar (without inner label), long sleeves zipped to enable gauntlets to be worn, and a belt fitted around the waist area; original jackets like this were not issued with pockets. The front left breast bears a vintage leather 2.5 x 2 repair patch, with the left arm featuring a similar patch measuring 3 x 1.25; the two wrist zipper pulls bear 'crown' and Air Ministry marks, with "Made in England, DOT" on the opposite sides, and the main zipper pull is marked "Lightning." In very good to fine condition, with expected wear around the cuffs; the leather remains supple and pliable. Vintage Irvin Royal Air Force flight jackets remain scarce and highly collectable.