‘Bomber jackets,’ as we’ve come to refer to them today, were originally known as ‘flight jackets’ and were created by the US Army Aviation Clothing Board in 1917 to keep WWI pilots warm in the uninsulated, open-air cockpits of the early fighter planes.
Between the two World Wars, flight jacket design evolved alongside aviation advancements. With cockpits becoming closed, narrower and encumbered with technology, new styles were introduced namely, the leather US Army Type A-1 in 1927. The A-1 had a knit waistband and cuffs, which not only insulated the jacket from cold air, but gave it a particularly flattering fit, high on the waist. The A-1 laid the groundwork for the modern bomber jacket we know today with its knitted collar, cuffs and waistband (though the 1927 A-1 had a button-up closure).