I'm old but had a duffle coat as a kid a hundred years ago. I don't know why but I suddenly got an itch to get a new one. That may have been stimulated from recently watching some old Brit WW2 Naval war film starring someone like Kenneth More as the captain, who was wearing one.
I'm 5' 8" and slimmish build. This one fits me perfectly and looks really good. Duffles are no good in heavy rain because the material is a bit like a blanket that just soaks up the water. But in any other cold weather, just outstanding. Highly recommended.
In fact I bought a matching ladies' one for my partner from the same seller via Amazon so we deliberately go out together both wearing our identical duffles just to get a reaction from people. Sad or what?