Showa Retro Summer Jacket This is a short-sleeved summer jacket that my grandmother wore to the Osaka Expo 55 years ago. The fabric is very thin, but it has a lining, so it looks like it would be hot (lol). If you carry a red bag, it would match the Myakumyaku color scheme♪ There are no size markings, so here are the flat measurements: Width (underarm to underarm): 45 cm Length: Approximately 50 cm Shoulder width: 38 cm Sleeve length: 23 cm