I purchased this about 2-3 years ago, but I haven't used it much, so I'm selling it. The size is M, but I think it's about the same as a general L size. For reference, I'm 183cm tall and weigh about 66kg, and it fits with quite a bit of room to spare. It's a little difficult to see in the photos, but there's a removable liner inside, so I think you can adjust it depending on the temperature. You can use it in the fall, winter, and spring.