If your coat has a detachable hood fur or trim, shop it one at a time when now not in use
https://archerwybq312.greyhavendaily.com/posts/the-best-way-to-clean-and-dry-a-down-coat-without-damage
If your coat has a removable hood fur or trim, shop it one by one whilst not in use. This prevents tangling and enables maintain the trim form.