100% cotton. Soft and warm with a slightly napped texture, like flannel. This single-layer jacket can be worn as a light outer layer in spring and autumn, or layered under a coat like a cardigan in winter. It has a relaxed fit. I bought it because I liked the material, but I realized it doesn't suit me at all at home, so I'm selling it. I've only worn it once. I think it can be used for natural or retro-style outfits. The color is a dark gray, close to black. It also looks like tweed. When I, who am 163 cm tall, wear it, the hem comes to around my calves.