This is the Arc'teryx Gamma Rock Pant Women's. The size is 4 (M). I think it's about a men's S. I am 168cm tall and have a relatively slim build, and I wore this size. This model uses very strong fabric on the seat and knee areas, and the silhouette is slim and very beautiful. The hem also has a hook to attach to shoelaces, and the construction is very elaborate. I've worn it about 5 times in the mountains, and I think it's in the category of a beautiful item. Thank you.