This Trench Coat was issued to the Swiss Soldiers from the early 1900's until recently when the new TAZ 83 uniforms came out. This one comes with its original wool liner. Just when you thought wool alone was warm enough. The Swiss did one better and added a wool liner to the Coat. Making it even warmer.

Another point about this trench coat is the size. 

Double or Xtra-Large.

Just can't find these in any large sizes. In the picture I am presenting the coat on myself. I wear XXL US shirts, and am 183 or 6ft tall.