I'll keep it simple so don't worry.
Quality 10/10 (For $15 or so, you can't get better, clear 10, no doubt... material is awesome, soft and warm)
Description says winter for the season. I wouldn't say winter. Autumn and spring definitely, it's a little bit thin for winter.
I'm cca 172cm, 60kg... Ordered M... fits perfectly.
You can wear it with some classy ourfit like suit, shirt or formal shoes. Check my photos.