So been digging through the piles on piles of big lofty down and synthetic jackets on the market as looking for something beefy to replace my Atom AR. Stumbled on the Bergtagen collection from Fjallraven which 'claims' to be designed for high alpine use, with a very confident social media person claiming it's 'perfect for Denali'. Wondering if anyone has any experience with the kit or more knowledge on the mysterious G-Loft Supreme insulation? Also like the idea of picking up the Mummyfoot which is just half a sleeping bag that synches around the parka for a really compact unheated hut setup (like the old Patagonia Ascensionist setup).
Atom AR is nice but was up in the Lyngen Alps and Lofoten recently, with temps around -10C and major windchill and the Atom AR was OK during the day with a Delta LT fleece, lightweight base layer and Gore Pro shell. When skinning up I dropped it just for a shell and fleece else I'd drown in sweat but after sunset (around 3pm) it rapidly got colder over the next couple hours and standing still would get me feeling pretty chilly but bearable. Without a shell it wasn't bearable.
So now I'm heading to Dovrefjell in March which is known to fluctuate from -10C to -25C in a day with crazy high winds, surprise blizzards and being charged by Musk Oxen due to terrible visibility. The skinning is less strenuous as it's mostly flat/rolling ground at a slow pace, and the 'mountaineering' I'm doing is pretty much winter walking with a touch of scrambling. I will be hanging about not moving a fair bit as well when setting up tripod shots and messing about with cameras, and not feeling at all confident in relying on the Atom to keep me warm.
Aside from the Bergtagen I've been looking at the usual Arc faves like the Cerium and Thorium, Rab Resolution, Positron and Neutrino Endurance and Alpkit Phantac. Any recommendations would be much appreciated!