It comes with a synthetic water resistant prodown insulation and it s very roomy.
The north face furnace 20 review.
Its 20f manufacturer rating seems more reasonable.
But i found the hood bulky and uncomfortable.
As a car camping bag this is a fine choice but as a backpacking bag you should consider smaller lighter bags like the also affordable kelty cosmic 20.
The marmot phase 20 and rab mythic 400 for example are both filled with 14 1 ounces of much higher quality 850 fill power down but receive worse en temp ratings 19f and 21f respectively the furnace is still plenty warm for most 3 season uses but don t expect to stay toasty warm at its 14f en rating.
With that you also get a few extra ounces and some extra inches to squirm and sprawl about within the bag.
The furnace 20 offers lots of room to move and fidget at night without being drafty and the 550 fill down insulation keeps the cold night air at bay.
The verdict for general 3 season backcountry use the north face furnace 20 stands tall.
The north face furnace 20 comes with a low price tag.
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