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Reviews

Rated 5 out of 5 by from very lightweight, compressable, and warm I used this for the first time on a scout camp this past weekend. night temps were 50 degrees F. I was so hot i had to unzip it halfway. All signs point to this being a perfect 3 season and probably 4 season bag for me. It compresses so small I can't wait to take it backpacking (need to buy a compression sack if you want it really small). The stuff sack it comes with isn't 'compression' but still pretty small, and it easily stuffs into it. For backpacking to save space I'll get a smaller compression sack.
Date published: 2017-06-12
Rated 5 out of 5 by from A True 20-Degree Bag TNF Furnace 20 is a true 20-degree bag; definitely a top performer when you are out in the cold elements. One of the best features is the bottom/back of this bag, which uses a less compressible synthetic to ensure the bag stays warm between you and your ground layers. There is a nice draft collar inside the bag that works extremely well, even if you are keeping the hood more open. For bigger guys / gals, this bag has great room at the shoulders and hips. The regular size weighs 2 pounds & 12ounces. It stuffs to 9"x16". I used Big Agnes Girdle compression straps to reduce the included stuffsack to 7"x12" but this bag packs best when just stuffed into the bottom of a backpack. Be aware that the zipper can catch on the bag, so you must pay attention when opening / closing this bag. The REI bags have a better zipper liner, but not worth losing a star on this awesome 20-degree bag.
Date published: 2018-01-21
Rated 5 out of 5 by from It's my second one I bought the same one three years ago for my son when he started backpacking.He really loves it, It's warm and light in weight. I just bought a second one for myself to replace my synthetic one. I think it's a nice and warm backpacking sleeping back for a very reasonable price.
Date published: 2017-04-24
Rated 5 out of 5 by from north face furnace 20 These bags are warm & comfortable in the wide range of temperatures I camp in, from my winter weekend getaways on minnesota & wisconsin lakes to ice fish to my summer canoe trips down the St Croix to visits in the national parks . It packs down in my 10 liter waterproof sealine bag with no problem . I highly recommend this bag for the price .
Date published: 2017-06-13
Rated 5 out of 5 by from toasty Great value. Compresses pretty small, really warm. Got it a little damp and wasn't a problem at all.
Date published: 2017-06-09
Rated 5 out of 5 by from Supper warm I have used my bag a few times. From 30 to 40 degree nights. And was supper warm.
Date published: 2017-06-10
Rated 5 out of 5 by from Great bag Took this to Colorado last week. Hiked maroon bells. Bag was light weight, easy to pack, and kept me warm on 30 degree nights. Love it!
Date published: 2017-07-13
Rated 4 out of 5 by from Bargain Purchased a last minute bag for my Sierra Nevada backpacking trip. The low temp in the late Aug was middle 40s so I was a bit disappointed that I wasn't able to test the lower degree temp rating. The bag is super affordable for the quality compared to others on the market. My only disappointment with this bag, would be the zipper sometimes snags.
Date published: 2017-09-04
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Questions & Answers

Is there an estimate of compressed volume somewhere? It's not listed in the specs but I want to get an idea of how this would pack with the rest of my gear. Thanks

Asked by: NorthwestGuy
​The compressed volume is 13.6 liters.
Answered by: REIservice
Date published: 2017-09-22

Can this sleeping bag zip together with another?

Asked by: Hiker dude
We only sell the Furnace with a left hand zipper. A bag by The North Face women's with a right hand zipper for a similar type bag will work.
Answered by: REIservice
Date published: 2017-06-17

Is this bag a baffle box construction?

Asked by: Quinn
​Typically a baffle box is constructed with squares to hold the down in place, this bag has long narrow compartments filled with down.
Answered by: REIservice
Date published: 2017-11-21

What's the zipper length and is it a dual-slider?  Thanks

Asked by: Carl
​The regular length bag has a dual zipper that measures approximately 48 inches in length.
Answered by: REIservice
Date published: 2017-11-16

What size compression sack would be recommended for the long version?

Asked by: cooldudesmd
​A 15 liter compression sack is a good choice for this sleeping bag.
Answered by: REIservice
Date published: 2017-12-26

I want to get a compression stuff sack for this bag but do not know how big I should buy the compression sack. Any advice ?

Asked by: Oods
​A 15 liter compression sack is a good choice for this sleeping bag. https://www.rei.com/c/compression-sacks
Answered by: REIservice
Date published: 2017-11-23

What is the packed weight?

Asked by: RCpilot03
​The packaged weight is approximately 2 lbs. 12 oz. for the regular length.
Answered by: REIservice
Date published: 2017-09-04

What size compression sack would you recommend? According to the North Face site it has a compressed volume of 6 liters.

Asked by: Hikergt
The compression stuff sack size is determined by the original stuff sack size. In the 16 liters range would be a good place to start. https://www.rei.com/c/compression-sacks
Answered by: REIservice
Date published: 2017-08-11
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