Anyone tried an Eddie Bauer Evertherm jacket? Uses that relatively new Thindown insulation material. After a cursory look it seems like a nice material for a light, thin jacket with decent warmth. None of the reviews I’ve seen have commented on whether it breathes well. Though it seems to have seen some good testing on climbs in the Cascades and on Everest. EB has sole use rights to the material for now.

https://www.eddiebauer.com/campaign/evertherm

https://m.youtube.com/watch?v=RaMnvDKTEXk&time_continue=83

http://www.thegearcaster.com/2017/08/eddie-bauer-reinvents-the-down-jacket.html