This is a jumper dress from Pinore, manufactured by King Co., Ltd. I purchased it about 10 years ago. I've worn it a few times, but there are no noticeable stains, scratches, or signs of wear and tear. I bought it for tens of thousands of yen, so I believe the quality is good. It's a foreign size 38, but it has a relaxed fit, so it should also fit a Japanese size M. The length is approximately 94 cm.