Vintage Japanese Silk Kimono

I believe this is more accurately described as a nagajuban. It doesn't have a materials tag on it, but it feels like silk. It is in vintage condition. Some faint discoloration that can be taken out with washing, but I did not attempt it. *Measurements when flat* - shoulder to shoulder: 24.5" - shoulder seam to end of sleeve: 12.5" - width of sleeve: 20.5" - armpit to armpit: 24" (adjustable due to nature of garment) - length from neck to bottom hem: 52.5"