FL Chamberlain vs KUIU super down pro

[jt4]

According to specs, the super down pro has 5oz of 850 down and FL said (in the online chat I had with them) the chamberlain had 300g (10.5oz) of 800 fill down. I get that equal amount of 850 vs 800 down wouldn’t be the same warmth but how is it possible that the chamberlain isn’t nearly twice as warm as the SD pro according to the amount of down fill in each?

 

[LJ Buck]

According to all reviews the chamberlain is possibly twice as warm.

 

[Turkeygetpwnd38]

I have both. The Chamberlin is twice as warm, but twice as heavy. It is also a blended down, not full down like pro. Very different jackets with different weights and packability.

 

[ChrisAU]

The Chamberlain is a hog of a coat. I could find no practical application for the one I had as I do not hunt in Antarctica. For someone who routinely glasses in sub zero temps it should be awesome.