I have one of these jackets that I bought on a whim on eBay. Size medium long. Completely reversible and identical inside right down to the cigarette pocket. It is NOT a synthetic lining but rather all cotton twill. Labeled: FLITE-WEAR by LAND MFG. CO. Wichita Kansas, military size and weave, black & gold nomenclature tag. Gleb has seen my jacket and may be able to add anything other specifics. I believe they issued these jackets to Astronauts so they could keep up to date with their required flight hours and of course test pilots. I also have two other "test pilot" cloth jackets of an late fifties/early sixties vintage that also have all the same features plus the oxygen hose clamp pads (SLATE COLORED OUTSIDE-ORANGE INSIDE) that were MFG'd by =FRUHAUF= FLYING APPAREL <CONTRACTORS TO THE U.S. AIR FORCES> <FRUHAUF SOUTHWEST UNIFORMS> Wichita 2 Kansas U.S.A. Nomenclature tag is the same size, color and weave as the military. The last were from an estate of a test pilot.