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A sleeping bag is more than a matter of comfort. In extreme circumstances, having the right sleeping bag can be a matter of life and death. But that's no reason not to find one that's nice and cozy, too.
The Sierra Designs Zissou 20 Degree Down Sleeping Bag is our top choice because it zips up warm and snug for use on cold nights, yet opens up wide for warmer weather.
I've spent some pretty cold nights in some pretty harsh places over the past decade. I rode out a windstorm on the Ingraham Flats glacier of Mt. Rainier back in 2012. I've set up camp at the fittingly named Trail Camp on Mt. Whitney four times. It's also known as High Camp because the elevation there is just above 12,000 feet. Yeah, it gets chilly. I've slept in leaky huts high up in the Sierra Nevada de Santa Marta mountain range of Colombia during biblical downpours.
And so forth, the point here isn't to rattle off the names of various mountains — as much fun as that can be — the point is I know what makes the difference between a terrible backcountry night and a passable evening during which you actually get some shuteye. It's the sleeping bag. You probably guessed that already, being as you're here to read about sleeping bags.
As with many elements of gear intended for use far afield, choosing the best sleeping bag means weighing various needs and selecting an option that comes closest to meeting as many of them as possible. You're not going to find one sleeping bag that suits all climates, activities, and users.
The warmest bags out there are also the heaviest. You have to keep warm when camped out at night, but if you're trekking dozens of miles each day, that huge heavy sleeping bag might not be worth the extra pounds. If you're car camping or pitching your tent after a short stroll into the woods, that slender, form-fitting mummy bag that only weighs a couple of pounds thanks to its advanced synthetic fill might be overkill. Why not spread out in a big, comfortable bag and rest easy if pack weight is no issue?
When choosing the best sleeping bag, there are a few basic considerations you have to make, including your size relative to a given option, the temperature rating of the bag, the likely temperatures of the places in which you'll use it, and your personal requirements for comfort. Some people hate hooded bags, for example, while some people just love drawing the draft collar tight around their heads and trapping all that warm air inside. Me? I like the option of the collar, but you'll rarely find my head tucked into the hood unless it's truly freezing inside that tent.
In assembling this guide, I looked for bags that will suit a range of activities. You could read for hours on end about ultra-light sleeping bags ideal for glacial trekking or about double bags great for couples. But you probably don't have hours to devote to that, thus this more inclusive survey of five great sleeping bag options.
Here are the best sleeping bags you can buy:
Updated on 08/21/2018 by Steven John: Added new picks, updated prices, and removed out of stock items.
Read on in the slides below to check out our top picks.
SEE ALSO: The best men's hiking boots you can buy
The best sleeping bag overall
Why you'll love it: Thanks to its unique, clever design, the Sierra Designs Zissou 20 Degree Down Sleeping Bag manages to be suitable for use in both cold and warm weather.
As the 20 degree part of this sleeping bag's name suggests, the Sierra Designs Zissou 20 Degree Down Sleeping Bag is ready to keep you warm on some bitterly cold nights.
Its 650-fill insulation uses the company's proprietary DriDown, which the brand describes as"regular down... treated with a molecular level polymer to create a hydrophobic finish on each individual down plume, [allowing it] to stay dry longer, loft better, and dry faster than untreated down, keeping you warmer in any environment." So that's good, right? And so too is the classic mummy shape of the bag, which you can zip up where only your face is exposed.
Ah, but what about camping out in warmer conditions? This clever bag has you covered there, too. And you can trust me on this. I recently brought one along on a camping trip where the temperature topped 90 during the day and the sea level humidity was brutal.
The bag is a good choice for warm weather for two reasons. First, it has a zipper on either side, so you can fold down the top half of the bag almost to your waist, exposing plenty of your body and allowing heat to escape. Second, the bottom of the bag features a self-sealing vent flap. When not intentionally engaged, the bag remains closed and insulated at the feet. But you can also easily slip your feet out through the vent for much needed cooling and air circulation.
While a bit pricey and slightly bulkier than some of my favorite sleeping bags for hikes or mountaineering, given this bag's versatility, it's my overall favorite.
A writer with TrailSpace called the bag "innovative and versatile" and loved how well it performed in both warmer and colder temperatures, and how the bag is quite comfortable, too.
Pros: Great for hot or cold weather, moisture-resistant fill, roomy and comfortable interior
Cons: Rather expensive
The best sleeping bag for extreme cold
Why you'll love it: The Mountain Hardware Lamina Z Bonfire is rated at -30 degrees Fahrenheit, so if you need to keep warm when it's super cold, this is the bag to choose.
I've spent a good amount of time tucked into a Mountain Hardware Lamina Z Bonfire sleeping bag, and the very first time I crawled inside one, I was simply testing it out on the hardwood floor of my living room. What struck me at once was how comfortable I felt even on the wooden floor. This bag is so thick and padded that you could almost skip the sleeping pad and still be comfortable on most surfaces. Its soft polyester lining is comfortable and moisture-wicking, and its exterior is made from a resilient nylon. The "Thermal Q" filling retains its insulating properties even if it gets damp.
As for warmth, I have yet to spend a night in a climate too cold for this bag to keep me more than warm enough for comfort. In fact, you will usually have to allow some cool air in to bring the interior temperature down to a comfortable level.
That warmth does come with its drawbacks, of course: The Lamina Z Bonfire weighs more than five pounds and, even after your best efforts at compression, it will still occupy a bit more pack space than a basketball (about 15 liters of space). The weight and size of this bag almost make it unsuitable for use during climbing expeditions or on long treks unless you will genuinely be facing temperatures well below freezing.
Being rather expensive, the Lamina Z Bonfire is not a top seller on Amazon, though all of the reviews you will find there are glowing. One buyer states using the bag is "like sleeping in a sauna," while another celebrates the comfort it offers even to a man standing more than 6'4".
A review from the blog of trusted outdoor gear retailer REI didn't hold back with praise for the Mountain Hardware Lamina Z Bonfire, celebrating its heat retention and lack of cold spots, though their testers did point out the bulky size of the bag even when it is compressed for packing.
Pros: Fabulously warm sleeping bag; comfortable padding; water-resistant shell
Cons: Heavy and bulky, not ideal for distance backpacking or for climbing expeditions
The best sleeping bag on a budget
Why you'll love it: The Coleman North Rim Extreme Weather sleeping bag costs a quarter the price of many options that boast similar statistics of warmth and weight.
For a change, let's start out with a few of the negative points because they will actually make the highlights of this sleeping bag stand out even more. The Coleman North Rim Extreme Weather bag is rather heavy, at over four pounds, and it doesn't compress that well. Even packed down tight, it takes up a lot of space in your backpack, and that's despite the fact that it probably won't be comfortable for an adult male much taller than 6'2".
Beyond that, this is a superlative sleeping bag. It has a tough ripstop polyester exterior and a soft, comfortable interior lining that just so happens to also be made of polyester. Thanks to the fact that the fill is also made from — you guessed it! — polyester you can machine-wash this bag without it losing its insulation quality. You can even tumble it dry on low. The North Rim Extreme should keep you warm even at temperatures well below the freezing point. It's rated as a zero-to-ten-degree Fahrenheit bag, and details like a full-length draft tube placed behind the zipper and a drawstring hood help keep the heat inside the bag where you need it.
But that price is the crown jewel here. This sleeping bag costs only a bit more than forty bucks. For the warmth and quality, you can't beat that price.
And hundreds of customers know it. While only 64% of current Amazon reviews are five-star, there are enough positive vibes out there for this bag to rate at 4.4-stars overall. One buyer remarked on becoming too warm in the zipped-shut bag despite snow actively falling outside his tent, while another summed it up with the words: "Overall, for the price, I think this sleeping bag is hard to beat."
As for what the pros have to say, a Camping Quartermaster review praised the rugged stitching and, of course, the low price, but did bemoan the bags weight and bulkiness when packed down. A reviewer with All Around Camping noted the draft-blocking curtain around the head and shoulder areas of the bag, but advised bigger, taller folks to look elsewhere.
Pros: Great low price tag, warm and cozy, easy to adjust ventilation properties
Cons: Heavy, bulky even when compressed, too small for taller, larger users
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