musashiaharonYou can add a fur hood. It buttons into the original hood. An example can be seen here:
https://store.glennsarmysurplus.com/fish-tail-parka-m51-hood-p901.aspx
No affiliation with link. Just an example. I would recommend getting an original wool liner. Prob more than this coat if you can find one but definitely worth it. This is one of the few pieces of gear I "lost" in the Army so I could keep it when I got out. I also kept my wool 5 button sweater.