It's pretty loosely rendered. It could be wool, it could be just about anything.
Is it supposed to be a nice coat, a cheap coat, a "cool" coat ?
You could do leather, a cotton trench coat, lots of options.
Actually in the pipes:
- Remaking Ser Loras doublet.
- Luke Skywalker, A New Hope
- Wind Waker starter costume in swim material
Eventually: Paul from Dune, Faramir, Harry Sullivan