I went to the north of Norway (into the Arctic Circle) 2 years ago & was worried about feeling cold.
I bought a Rohan padded coat (synthetic not down, so it’s washable). It’s very light (Rohan give weight, pack sizes etc on their website) & was invaluable. I also got some fur-lined boots from josef Seibel which are also very light but warm & have a hiking boot -type sole which was great in snow & ice.
I agree with others about uniqlo being great for vests, long-sleeved tops & merino or cashmere sweaters, all very light.
Also thin thermal leggings under trousers.
Have a great time!
What medical conditions seem more common now than when you were growing up?
Help with some diplomatic wording please
