The writer standing in polish military coat.
https://files.mastodon.social/media_attachments/files/111/815/458/466/812/770/original/9227c894cd165a66.jpg
Have you considered military surplus? The Polish officer's coat I bought two years ago for 60€ is the warmest winter coat I've ever owned, warm even in -30°C.
I know finding these is a bit of a dice roll, but Varusteleka seems to get shipments semiregularly, you can subscribe for an inventory alert, and they sell these on both sides of the Atlantic, I believe.
You can button these to both directions, if that's a criteria, and the backwaist can be adjusted, somewhat.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.