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The original was posted on /r/Ultralight by /u/ultratung on 2024-08-22 21:31:47+00:00.

I have seen quite a few times people say on here that down pants as part of a sleep system are inefficient for warmth, which probably is true, but something interesting I noticed is this:

Cumulus Basic Down Pants: 102g down, 205g weight -> 50% down ratio

Ice Flame 7D nylon down pants: 99g down, 187g weight -> 53% down ratio

Now let’s compare to a sleeping bag with the same amount of down:

Cumulus Magic 100 bag: 105g down, 215g weight -> 0.49% down ratio

I would have personally definitely thought that sleeping bags would have notably more down per weight unit than a pair of down pants, but it seems like this isn’t the case. So are down pants underrated?