What you have here is a duffle coat which is half very traditional, and half not so much.
It certainly has the elements expected of a duffle: the shape, the accommodating cut, the front yoke, and of course, the toggles. Where is deviates most is, foremost, its construction, and in particular, around the shoulder and sleeve.
Looked at front-on, the duffle coat has an in-set sleeve (above). You get a crisp, smart, line. At the back, though, it has a raglan sleeve (left) — which is synonymous with comfort and freedom of movement, and is especially welcome when you wear the coat over a few other layers in winter. The best of both worlds.
Notable too is the hood — which, being a three-panel style, is rather more structured than a bog-standard duffle coat hood. Then there's the pockets, which are supplemented by a hidden pocket, accessed sideways under the front yoke.