Reviews You Can Rely On

The North Face Inferno 0 Review

A lofty, very comfortable sleeping bag that is amazingly warm, lightweight, and has an effective, minimalist design
the north face inferno 0 sleeping bag down cold weather review
Credit: The North Face
Top Pick Award
  • 1
  • 2
  • 3
  • 4
  • 5
Price:  $600 List | $589.95 at Backcountry
Pros:  Very warm, comfortable, and lightweight
Cons:  Zipper catches, cinch strap loosens easily
Manufacturer:   The North Face
By Brian Smith ⋅ Review Editor  ⋅  Nov 24, 2022
Our Editors independently research, test, and rate the best products. We only make money if you purchase a product through our links, and we never accept free products from manufacturers. Learn more
72
OVERALL
SCORE


RANKED
#3 of 14
  • Warmth - 20% 8.0
  • Weight - 20% 8.0
  • Comfort - 20% 7.0
  • Packed Size - 15% 6.0
  • Weather Resistance - 15% 7.0
  • Features - 10% 6.0

Our Verdict

The North Face Inferno 0 is one of the most comfortable sleeping bags in our lineup. Its lofty 800-fill down literally cradles you softly in its silky fabric, and as one of the lightest zero-degree bags in our lineup, you won't hesitate to take it along on backcountry adventures. It does have a minimalist design which requires some patience with the zipper and cinch strap.

Compare to Similar Products

 
Awards Top Pick Award Editors' Choice Award Top Pick Award Top Pick Award Best Buy Award 
Price $600 List
$589.95 at Backcountry
$805 List$650 List$600 List
$412.39 at REI
$315 List
$315.00 at REI
Overall Score Sort Icon
72
74
73
71
62
Star Rating
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
  • 1
  • 2
  • 3
  • 4
  • 5
Pros Very warm, comfortable, and lightweightWarm, awesome comfort, great warmth to weight ratioOne of the warmest bags in the test, lightweight, compression sack includedComfortable, spacious, lightweight, elasticized baffles allow you to sit cross leggedDWR shell fabric, glow in the dark zipper, large draft tube, inexpensive
Cons Zipper catches, cinch strap loosens easilyExpensiveLack of hydrophobic down, missing top hood cinch, snug fit not everyone's favoriteSignificantly less warm than similarly rated bag, enormous footbox, ventsHeavy, static drawstring around the face
Bottom Line A lofty, very comfortable sleeping bag that is amazingly warm, lightweight, and has an effective, minimalist designFor temps down to zero degrees, you can't beat this lightweight but very warm bagA truly supreme sleeping bag that stands out for impressive weight savings without missing out on warmthThis comfort-focused bag has a wide, roomy cut and vents for temperature controlAn inexpensive bag that offers excellent warmth and weather resistance, albeit heavier than most in our fleet
Rating Categories The North Face Infe... Western Mountaineer... Mountain Hardwear P... NEMO Sonic 0 Mountain Hardwear B...
Warmth (20%)
8.0
8.0
8.1
6.0
7.0
Weight (20%)
8.0
7.0
8.0
6.0
6.0
Comfort (20%)
7.0
8.0
6.0
9.0
6.0
Packed Size (15%)
6.0
7.0
8.0
6.0
5.0
Weather Resistance (15%)
7.0
7.0
6.0
7.0
7.0
Features (10%)
6.0
7.0
8.0
9.0
6.0
Specs The North Face Infe... Western Mountaineer... Mountain Hardwear P... NEMO Sonic 0 Mountain Hardwear B...
Measured Weight (size Regular) 2.68 lbs 2.85 lbs 2.68 lbs 2.95 lbs 3.13 lbs
Fill Weight 30.0 oz 29.6 oz 24.0 oz 35.0 oz
Type of Down Fill Down RDS Certified Goose Down Goose Down RDS Cert/Fluorine Free Down RDS Certified Down
Fill Power 800 850 850 800 650
Material Weight (excludes down filling) 15.7 oz 13.3 oz 23.3 oz 15.1 oz
Temperature Rating 0°F 0°F 0°F 0°F 0°F
Pocket No No Yes Yes Yes
Shoulder Girth 64" 66" 58" 61" 62"
Hip Girth 60" 57" 52" 58" 53"
Foot Girth 44" 41" Not listed 53" Not listed
Shell Material 15D recycled nylon, 30D nylon taffeta MicroLite XP 10D Nylon Ghost ripstop, DWR finish 20D nylon ripstop, DWR treatment 20-Denier ripstop nylon
Continuous Baffle Yes No Yes Yes

Our Analysis and Test Results

Remember that feeling of comfort when you were a kid, and your mom or dad threw a cozy blanket over you? The Inferno feels almost indescribably similar. As you pull the zipper closed, the lofty down and soft material settle around your body, enveloping you into a deep slumber. Lightweight, well-designed, and quite warm, you won't hesitate to sleep in the cold with this bag. In fact, you might not even want to get out!

Performance Comparison


the north face inferno 0 sleeping bag down cold weather review - the north face inferno is so cozy, you can't help but smile inside it
The North Face Inferno is so cozy, you can't help but smile inside it
Credit: Brian Smith

Warmth


There's nothing like snuggling into a warm sleeping bag in cold weather, but only if the bag is warm enough. Fortunately, the Inferno 0 lives up to its name. Within minutes of getting inside, the down settles close to your body and quickly traps the heat you generate. It is no secret that sleeping bags that are too roomy just don't retain heat well. Since this bag is just snug enough, but not too snug, it allows you to roll around inside while efficiently maintaining your warmth.


How does the Inferno 0 fit like a glove? Well, you can easily see the contoured shape of this mummy bag. Large, soft baffles around the face help to seal the hood opening. A single cinch cord on the outside opposite the zipper adjusts the size of the hood's opening, keeping the cold air out. The spring-loaded drawcord retention device could be a bit beefier since the cinch loosens pretty easily. The side zipper is just the right length and an interior baffle covers the inside of the zipper, effectively keeping drafts of cold air out. The foot box was quite roomy and felt a bit cooler than the rest of this toasty bag, allowing space for additional layers, but if your feet get cold easily while you sleep, down booties or some warm wool socks might not be a bad addition.

the north face inferno 0 sleeping bag down cold weather review - snug as a bug in a rug, the inferno keeps the cold out
Snug as a bug in a rug, the Inferno keeps the cold out
Credit: Stella Zollinger-Smith

Weight


At 2 pounds, 11 ounces, you might find yourself impressed with how warm and lightweight the Inferno is. Simplicity in design usually shaves weight, and this sleeping bag is slim. The side zipper is just long enough to easily get into and out of, while a single cinch cord minimizes excessive weight-adding features. The lofty down, on the other hand, is plentiful, adding weight where it matters most.


the north face inferno 0 sleeping bag down cold weather review - a lightweight at  2 pounds, 11 ounces (subtract the 3-ounce...
A lightweight at 2 pounds, 11 ounces (subtract the 3-ounce compression sack)
Credit: Brian Smith

Comfort


While it always feels good to crawl into a warm sleeping bag in cold weather, we instantly noticed how soft and comfortable it was inside of the Inferno. As soon as you pull up the zipper, you feel the lofty down settling around your body. Seconds later, you begin to warm up and relax. This bag fit like a glove. It's designed to create warmth quickly by minimizing air space without feeling too tight.


Baffles of down feathers surround the neck and forehead, and the sole cinch strap is located on the outside of the hood so it doesn't get in your face while sleeping. There is a small gap in the neck baffle to access the right-side zipper, which allows a tiny bit of air to get in. This could have been easily remedied by overlapping the baffle by a few inches. With a simple, elegant solution, The North Face added three bungee cords on the underside to secure your sleeping pad. We really liked this feature, which kept us from slipping and sliding around, especially for those of us who roll around while we sleep.

the north face inferno 0 sleeping bag down cold weather review - the inferno fits like a glove, retaining warmth with limited air space
The Inferno fits like a glove, retaining warmth with limited air space
Credit: Brian Smith

Packed Size


We liked the compression sack that comes with the Inferno, but it could certainly be smaller. Even though it is fairly easy to initially stuff into its compression sack, it compresses too much like pizza dough, and you end up with a wide circumference when finished. A narrower diameter and overall smaller size would greatly improve the packed size.

the north face inferno 0 sleeping bag down cold weather review - the inferno compresses pretty small for a zero-degree sleeping bag
The Inferno compresses pretty small for a zero-degree sleeping bag
Credit: Brian Smith


Weather Resistance


Not only is the Inferno lightweight and toasty warm, but it also resisted the most precipitation during our most recent testing. Shedding snow like an A-frame log cabin, it also blocked the wind really well on a windy Wyoming day with a winter storm rolling over the mountains.


Here's the best part, though. After multiple submersions in the bathtub, it was still bone dry inside. And just to make sure, we proceeded to pour 10 cups of water directly over the zipper to no avail. Not a drop inside. You're probably not going to jump into a body of water with this bag, but it's nice to know you could!

the north face inferno 0 sleeping bag down cold weather review - water beaded up instantly and after multiple dunkings in the...
Water beaded up instantly and after multiple dunkings in the bathtub, the Inferno was still dry inside!
Credit: Brian Smith

Features


The Inferno comes with some nice, albeit simple features. An interior zippered pocket located right above your chest has ample room for your phone and keeps the battery warm. We thought the pocket's location above the chest might be bothersome, but surprisingly, it wasn't. A simple cinch strap is located on the outside of the hood on the left side, so it is easily accessible yet doesn't get in your face. Some people might not like the dinky cinch strap since the toggle is very small and loosens pretty easily. However, those who feel a bit claustrophobic in sleeping bags might like that when you push on the hood's opening, the cinch strap loosens, allowing more air in quickly if they start to overheat.


The side zipper is just the right length, but it was a bit sticky, so you'll need to be patient while zipping and unzipping. Time will tell how durable this small zipper really is. Perhaps a slightly larger zipper would run more smoothly and add some durability.

the north face inferno 0 sleeping bag down cold weather review - the minimalist zipper sticks easily and requires a bit of patience
The minimalist zipper sticks easily and requires a bit of patience
Credit: Brian Smith

Should You Buy The North Face Inferno 0?


If you're looking for a sleeping bag under 3 pounds that will keep you cozy and warm above 0 degrees Fahrenheit, this might be the bag for you. Snug but not too tight, we recommend the Inferno to those who don't need too much extra room in the torso, keeping in mind that our product tester is 5'10" with big shoulders and really enjoyed the perfect fit.

the north face inferno 0 sleeping bag down cold weather review - snug but not too snug, the cozy inferno is ideal for cold weather...
Snug but not too snug, the cozy Inferno is ideal for cold weather camping
Credit: Stella Zollinger-Smith

What Other Winter Sleeping Bags Should You Consider?


Our favorite bag of the bunch is the Western Mountaineering Kodiak MF for its warmth, compressibility, low weight, and high level of comfort. Another high-quality, snug-fitting winter bag with an awesome compression sack is the Mountain Hardwear Phantom 0. And for a more affordable but still worthy winter bag, check out the Mountain Hardwear Bishop Pass 0.

Brian Smith
You Might Also Like

Ad-free. Influence-free. Powered by Testing.

GearLab is founded on the principle of honest, objective, reviews. Our experts test thousands of products each year using thoughtful test plans that bring out key performance differences between competing products. And, to assure complete independence, we buy all the products we test ourselves. No cherry-picked units sent by manufacturers. No sponsored content. No ads. Just real, honest, side-by-side testing and comparison.

Learn More