This is a single-layer silk furisode (long-sleeved kimono) nagajuban (undershirt). It's a high-quality fabric with a patterned nagajuban. I've also taken a picture of the lining of the sleeves. The length is 138cm, the裄丈 (yuki - from the center of the back to the end of the sleeve) is 66cm, the sleeve length is 112cm, the front width is 29cm, and the back width is 31cm. It has been aired out and treated with a deodorizing and antibacterial agent.