- Striker Blue/Asphalt Grey 1 of 1
- With a European Norm (EN) lower-limit rating of 20°F, the Furnace 20 is a versatile bag for 3-season backpacking adventures when temps might dip below freezing
- 550-fill-power ProDown™ natural goose down insulation is light and lofty
- ProDown™ is enhanced with a hydrophobic finish that improves warmth by allowing it to dry faster and repel moisture up to 10x longer than untreated down
- Anti-compression pads made from Heatseeker™ Eco synthetic insulation are sewn into high-pressure areas that contact the ground to create an insulating buffer
- Shaped hood and down-insulated draft collar hold in warmth
- Insulated draft tube backs the zipper to prevent warm air from escaping; antisnag tape keeps the zipper from catching on the draft tube
- 3/4-length, 2-way zipper lets you make adjustments for ventilation
- Comfort-oriented shape has a less-tapered cut than some backpacking sleeping bags, allowing you more room to move around
- Footbox allows natural foot movement while also eliminating excess lateral space so you stay warm and comfortable all night long
- The North Face Furnace 20 Sleeping Bag comes with a standard stuff sack
- European Norm (EN) is an independent third-party temperature rating, allowing accurate comparisons across brands with other EN-rated bags
|EN lower limit (rating for men)||20 degrees Fahrenheit|
|EN comfort (rating for women)||34 degrees Fahrenheit|
|Temperature rating (F)||20 degrees Fahrenheit|
|Temperature rating (C)||-7 degrees Celsius|
|Fill||550-fill goose down|
|Sleeping bag shape||Mummy|
|Fits up to (in.)||
|Shoulder girth (in.)||
|Hip girth (in.)||
|Stuff sack size||9 x 17 inches|
|Stuff sack volume||20 liters|
|Compressed volume||6.6 liters|
Aug 16, 2015Great 3 season bagExcellent bad for general purpose 3 season backpacking. It is a very good compromise between weight and price and I find the fit and feel to be better than most other bags in its class I've ...
Read More Excellent bad for general purpose 3 season backpacking. It is a very good compromise between weight and price and I find the fit and feel to be better than most other bags in its class I've used.
The comfort temperature rating depends on a lot of factors. I've been able to layer up and sleep comfortably into the 20s without a tent while being hammered by wind. The design seals nicely even in the presence of strong winds.
The material is comfortable to the bare skin making the bag feel cozy in most conditions. The cut is a bit roomier than other bags. The zipper works well as do the drawstrings. A note on complaints of zippers catching ... what piece of backpacking equipment with a zipper doesn't catch if you don't guide it correctly. Compared to my tent and down jacket the Furnace zipper is super smooth.
The only area were the Furnace is a compromise is weight. Although the price to weight of the bag is good, paying $150 more to shave 1lb might be a good trade for through hikers.
Sep 8, 2015Nice ValueFor years I have had a really large (heavy) synthetic mummy bag. I got such a bag because a typical mummy bag was just to confining for a side sleeper like myself. I wanted a lighter, warmer ...
Read More For years I have had a really large (heavy) synthetic mummy bag. I got such a bag because a typical mummy bag was just to confining for a side sleeper like myself. I wanted a lighter, warmer, and maybe not quite so large mummy bag that still had room to move around in. I purchased this bag early in the spring online with hopes that it would meet my needs. Upon receiving it, I tried it out just to get an initial feel for the bag and I was pretty happy with the fit. I finally got to try it out at 9K and 10k feet with lows in the 30s and I was not disappointed. I tend to be a cold sleeper but with this bag I needed to unzip this bag partly after warming up in the middle of the night. I was able to ditch both my beanie and wool socks. I am very happy with my purchase and look forward to many more backpacking trips with it.
Aug 26, 2015Great bag, prelim reviewPurchased this bag for all around camping and backpacking. Spent two nights with about a 45 degree low and I was not too hot or cold.
I'm 6'0" 180lbs, so I opted for the Long model. Back/Si ...
Read More Purchased this bag for all around camping and backpacking. Spent two nights with about a 45 degree low and I was not too hot or cold.
I'm 6'0" 180lbs, so I opted for the Long model. Back/Side/Stomach sleeping all was plenty comfortable width wise.
Packs up in a 13 liter compression/drybag, and fits snugly in my backpack sleeping bag compartment.
Very happy with the purchase so far!
Sep 1, 2014Fantastic Sleeping BagThis is my first backpacking sleeping bag. So far it has exceeded my expectations. It is light, comfortable, and warm! Plus it looks great!
Jun 20, 2014Good entry level down bag for temps above freezingI had this bag for a couple months and used it on around 4 separate trips in a various conditions so I had a good chance to evaluate it. Overall it is a good bag especially for the price, ha ...
Read More I had this bag for a couple months and used it on around 4 separate trips in a various conditions so I had a good chance to evaluate it. Overall it is a good bag especially for the price, has a good combination of feature that will make it the right choice for many people. I ended up deciding not to keep it for personal comfort reasons (side sleeper) but would recommend to someone on a budget trying to get a down bag suitable for backpacking. .
- Great compress ability and low weight, fits very easily into a sleeping bag compartment on my Osprey pack. Nice materials and construction, quality typical of TNF.
- Roomy from the shoulders to the waist, more so than other bags in the same price range
- Wide hood does a good job of trapping heat while being comfortable and providing space to breathe. Drawstring to tighten/loosen work well and is positioned in a good spot.
- Good warmth down to EN rated comfort temp. EN ratings are on the label sewn onto bag which is good because the advertised 20degree rating is an average of the other temp ratings.
- DriDown will help retain insulating capabilities if the bag becomes wet
The not so good(but not bad):
- Zipper can get caught on draft tube. This can be mitigated/avoided by being careful.
- Comes with a stuff sack without compression, a different sack would allow the bag to reach a much smaller size than the one included. Still fits into a pack.
- Bag is very warm in temps above 45F. This is to be expected and can be solved by not zipping up all the way.
-Not very comfortable for side sleepers, most mummy bag aren't. However, the wider shoulders do allow room to turn inside the bag
- Very noticeably cold in temperatures below 30F. This was disappointing because the bag is advertised as having a 20F limit. On two of my trips nighttime temps dropped to around 25F and I was too cold to sleep despite wearing long underwear, beanie, and a down sweater Looking to the EN rating the comfort level is rated at 34F.
- Foot box is designed for your feet to be in the same position as they would be if you were standing up, this is not very comfortable when trying to sleep.
Nov 21, 2014Great Sleeping BagI bought two of these about a month ago, one for me and another for my son. We are both in Scouting and we were going on a camping trip where we knew the nights were going to dip close to fr ...
Read More I bought two of these about a month ago, one for me and another for my son. We are both in Scouting and we were going on a camping trip where we knew the nights were going to dip close to freezing. We needed a good 3 season bag and we went with this one rated to 20 degrees. It worked great. Both of us stayed nice an warm in low 30's weather. The bag is comfortable and the compression is great. I suggest buying the extra compression bag because you can squeeze this bag down to an incredibly small size. I am very pleased with this purchase.
Aug 22, 2014Big guys can be warm and comfy too!I am 6', 235# with broad shoulders and hips so my choices for mummy bags have been pretty limited and I have always needed to sacrifice comfort for warmth, until now. This bag is AMAZING! Th ...
Read More I am 6', 235# with broad shoulders and hips so my choices for mummy bags have been pretty limited and I have always needed to sacrifice comfort for warmth, until now. This bag is AMAZING! The temp rating is spot on. In just boxers, I was comfortable at 20 degrees at 10,000'. I am a side sleeper so I generally have to deal with other bags coming unzipped in the middle of the night. Not with this bag. I was able to roll over several times and stayed zipped in (I bought the Long version which added some extra turning room). The hood is a generous cut as well and had enough room for my backpacking pillow while cinched. I would recommend this bag to anyone my size or side sleepers. I am impressed and I think you will be too.