This is a leather jacket purchased for 20,000 yen at a vintage clothing store in Shimokitazawa. It's made of soft leather and is simple, yet features details like an inner pocket, and leather ribs and zippers, showing attention to detail. The brand is Daniel Cremieux, a French brand. While not a famous brand, I believe it's a good quality item. There are no frays, tears, or stains, but the leather has a slightly rough texture. Please refer to the photos of a 170cm, 62kg man wearing it for size reference. I will take measurements later, but I can do so sooner if you request it.