Hello, this is a Mammut fleece. The winter mountaineering season is finally here! I purchased this at a Mammut store about 5-6 years ago. I bought it for winter mountain climbing, but I've worn it on winter trips and other occasions. The size is European M, but I think it would be a Japanese L size. The tag says "Swiss Design," so I believe it's an imported item. There are thumb holes at the end of the sleeves. When it's cold, you can put your thumbs through them to keep your wrists warm. You can check the size by looking at the measurements in the photos. There is a stain on the left shoulder, near the chest. Please check photos 13 and 14. Feel free to leave a comment if you have any questions.