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The Never Summer 0 Degree Down Sleeping Bag gives you Marmot quality at an easy-to-handle price.

Marmot's 600+ fill down insulation gives the Never Summer 0 Degree Down Sleeping Bag plenty of warmth and low weight at a price that won't break the bank. Marmot used baffled construction, a 6-section hood, and a down-filled draft collar to ensure every bit of warmth stays in this bag with you. The two-way zippers allow you to easily ventilate, so you don't overheat when the excellent insulation becomes a touch too much.
  • The 600-fill goose down insulation offers a superior warmth-to-weight ratio and extra-lofty construction for supreme warmth
  • Durable nylon shell features a water-repellent finish to protect the down insulation from frost, dew, on condensation
  • Down-filled draft collar and Heat Bump draft tube protect against areas where cold can creep in unexpectedly
  • Ground-Level side seams allow the top layer of insulation to wrap fully over the body like a blanket
  • Easy-adjust cords mean that you won't be fumbling around at night trying to get comfortable
  • Stretch baffles keep insulation in place so cold spots won't develop when you roll around or adjust your body
  • Trapezoidal foot box has a slight forward lean which matches the shape of your your feet, allowing more room to move around without creating a cold spot
  • Heater pocket in footbox let you add additional warmth
  • Nautilus 6 baffle hood traps in extra warmth; Face Muff shields your face from bitterly cold air and won't irritate your skin

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Review Summary
7 4
9 3
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Marmot Never Summer Sleeping Bag: 0 Degree Down

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Here's what others have to say...

4 5


To someone just starting out this bag appears very attractive, good name, good price and very warm... very warm. To those of you buying your first real sleeping bag and want to prepare for the end of the world, warning this bag is overkill. For winter camping it is great but for anything over 25 degrees totally too much. This thing is also heavy. My suggestion is to get an 800 fill 15 degree bag instead for close to the same price and use a liner if it gets colder.

5 5

very good, true to its temps

I use this bag to sleep in every night. I live in a van in northern Michigan where it frequently gets down below -10F in the winter. This bag is comfortable and warm, although you really need a quality sleeping pad to get full warmth if your on the ground. My boyfreind and I each have one and since he has a left handed zipper, we can zip them together. Very warm, very cozy, this sleeping bag literally keeps me alive all winter, I'm very happy with it.

never summer

never summer

Posted on

always a good night sleep in the easy bake oven.

4 5

Get what you pay for

I found this bag to meet my needs. I've used it in snow caves and mega-mids ski touring the San Juans in February. However, I do use a liner and could be considered a warm sleeper. I think this bag is prime if you need a four season piece of gear for shorter trips. It does seem to gather condensation, creating wet down paranoia. The new shell option may be better? The wife likes to use this one during colder fall backpacks when I'll use a 15 degree bag. I've had some stitching come undone, but overall It's a great deal.

Get what you pay for
4 5

Great bag...

Picked this bag up a couple years ago, love it. The only downside is it's bulk. Takes up a good portion of any pack I've stuffed it into.

Draft collar and array of snaps and draw-strings make it perfect for those fall, Wyoming nights when all you have is a sleeping pad and this bag. Plenty of times I've woken up with frost around me, but was perfectly dry inside.

4 5

Good, but not perfect

I've used this bag now on multiple trips in all sorts of weather and it has served it's purpose, I have yet to experience not being able to sleep because of cold, it has gotten me through -15° C (5°F) nights (comfortably) and trips with pouring rain and just above freezing temperatures.

However, it's not perfect. It often feels damp in the morning, and on the third day of a trip I find it has often lost much of it's warmth, even if was never exposed to rain or water, just the humid air inside a tent. I guess this is just a downside with down bags, but I must say I didn't expect it to be quite so "harsh".

It doesn't ship with a compression sack and it packs quite large (in my opinion), but it's 600 fill down so maybe that is to be expected. I ended up getting a Sea to Summit eVent Compression Sack (I got the M/15L) in an attempt to reduce the bulk of it (and prevent it from getting wet), which sort of worked, at least it doesn't take up half my backpack any more.

I'm 5'10" and the regular fits well.

As other reviews say, remember to use a proper sleeping pad when it's cold, it really does make all the difference, otherwise you will feel the earth sucking the heat from you in the places where your weight sits.

All in all pretty decent, quite bulky but it can get you through those cold nights quite satisfactorily.

Responded on

a rep I talked to said that; on the third day the bag would lose it heat and feel damp if I didn't dry it out every morning by turning it inside out for 20-30mins before putting back in its stuff sack. seems like an easy fix.. hope it helps.

Responded on

Any down sleeping bag will lose loft due to perspiration at night. The only solutions are to dry the bag in the sun every morning, or to use a vapor barrier inside the bag.

5 5

so far so warm

used it twice now in the smoky mountains. it gor down in the upper teens with snow comin down and i didnt even need to zip it up all the way. definitly a cozzy night sleep

Does this bag come with a DWR treatment...

Posted on

Does this bag come with a DWR treatment like the couloir, or would I need to do a revivex or some other treatment on it?

Responded on

Yes, it does have a DWR treatment. If you're looking for even more water protection, check out the Never Summer Membrian version.

Responded on

pretty much all nylon has a DWR treatment from the factory on it. The DWR on this bag is not going to stop much, it will still get wet from tent condensation I would not use revivex on it because of what it may do to the down (which maybe nothing).Still I would use something made speciffic for down filled items. All down bags have the issue of getting wet but I have found the Marmot pinnacle to be more water resistant than most. Like Tim said if you want full on water protection get a membrain version.

5 5

Love it

I have an older version of this bag. I've had it for about 4 years now and it works just as well as the day I got it. It is really warm, and it is pretty lightweight without having to spend an extra $150 to get the 800 fill model.

4 5

Review Title

Love this bag! Just got back from a camping trip where it rained non stop. Some rain actually came in through the roof vent on my MSR MoRoom tent. But an awesome fact was discovered and that was that the bag is somewhat water repellent right from the store. I woke up in the morning(totally toasty) and there were beads of water on the top from where the water came in from the torrential rain. But whatever bag you get make sure you have great insulation between you and the ground. My REI pad only has a 3.2 R-value but i went to walmart and bought a $5 foam mat that worked perfectly. The temps only got down to around 34 degrees at night but it felt colder with the constant rain. Its not the lightest bag and probably not the bag your looking for on a long trek, but for the money, you cant go wrong. PS. the draft collar makes a huge difference at keeping your warmth in..a feature in any bag to look for..

4 5

Excellent Bag

One of the best ones Marmot makes in my opinion. I'm a pretty warm sleeper and this is perfect for nights in the single digits. If you are pushing 6' go for the long, it will be much more comfortable.

4 5

Not too shabby

I found this bag to be a lot warmer than i had thought. Used it for a few chilly nights in northern GA on the southern end of the AT. Kept me nice and warm, almost too warm actually, granted I was in GA. Anyway, my only complaint about the bag is the size, it does not pack down that well but I have been happy with it keeping its feathers and you cant go wrong with real down fill!

I am like 5' 11"....right around 6 ft....

Posted on

I am like 5' 11"....right around 6 ft. ...
Will the REG be to small or should i go with the LONG???
thank you

Responded on

I'd say go for the long, you'll have plenty of room to stretch out.

Responded on

I am 6'0 200lbs and the regular fits me just fine

Responded on

I am 5'll also 177 lbs and i was going with the regular until i got in it. The long was a much better choice..especially if you move around or wear extra clothing when you sleep.

5 5

Awesome Sleeping Bag

I bought this bag right before late winter backpacking trip in north eastern WI. I lows for that weekend were to be between 15 & 20 degrees. This bag performed great in these temps I was almost too hot in the bag. Everyone else froze and I was toasty warm. All in all I am very pleased with the bag. I would definitely recommend it to everyone that is thinking of doing any type of cold weather camping.

4 5

Purdy good

I like this bag a lot, but agree that it may not cut it for extended cold camping.

2 5


I picked this sleeping bag up in anticipation of a winter ascent of Wheeler Peak in New Mexico. Upon initial inspection it seemed to be a nice bag made with good materials. It was a little on the heavy side and did not compress as much as I would have liked it to but the price was right. The first night we camped at 9,400 ft and the temperature dropped to 15 degrees and I was toasty all night. When I woke up the next day I noticed that the bag was damp towards the bottom of the bag but it didn't seem to be an that big of an issue so we kept moving. The second night (which ended up being our last night) we camped at 12,000 ft and a huge snowstorm moved through dropping the temperature to 0 degrees. Once again I was toasty until about 3:00 am and I starting getting chilled especially below my waist. I shoved my down jacket in my sleeping bag and wrapped it around my waist to get me through the night. The next morning when I woke up around 6:30 the inside of my sleeping bag was completely frozen with ice. Somehow in the middle of the night moisture had crept into the down and froze solid. The snow storm ended up forcing us down before we made the summit but I don't know if I could have made it through another night with this bag. Needless to say that I lost my faith in this bag and I'm going to be returning this bag today.

Responded on

I guess maybe the name "Never Summer" could mean you're never warm using this bag :^)

Responded on

Unless you know for a fact that the water was from the outside of the bag, the odds are it was from the inside of bag. This is a very warm bag to me, so much so that I tend to sweat in it. The moisture will work its way to the outside of the bag as it should and will feel wet to the touch in the mornings. Down bags should always spend some daylight hours in the sunshine to helpevaporate moisture build up from the previous night when possible.

Responded on

Using a vapor barrier lining or clothing on the inside of the bag will prevent this issue. It's an issue with any down bag on multi-night trips or in humid-cold conditions.

Responded on

You (and every other human being on the planet) lose 12 - 14 oz of moisture through your skin every day, just sitting still, and more when sweating. The moisture was from you. There are things you can do to prevent it from staying in the down, like not layering up so much that you sweat, or using a vapor barrier liner. Also letting the bag dry out in the morning helps if conditions permit.

Responded on

sounds like you needed a bag rated for -20 at least for that type of trip.

5 5

nice one

For the price you can't beat it. Kept me warm in low single digits, actually got to hot and didn't zip it all the way up.

5 5

Best bag for your buck

I recently used this bag in the Pharaoh Lake Wilderness Area in the Adirondack Park. The temp dropped below 0 degrees and I was still toasty. The bags features are great. It has a great draft tube, two different drawstrings so you can tighten to your liking in the dark without pulling the wrong cord (there's one for the head and one for the draft tube). This bag also has a ton of loft. I spent two nights out in this below 0 weather and was quite comfortable. It did ice up a bit because of condensation but it didn't affect the warmth at all. If its a problem for you just wash it in a DWR coating and that will take care of the problem. This bag is compact, light, extremely warm and can be used for a solid three season bag (winter, spring and fall). Way to go Marmot

3 5


This bag has down dandruff, and it's not nearly as warm as I was expecting. I've used it to 10 degrees and needed more layering than I should to keep warm. I do sleep a bit warm, too. Not very water resistant, the bag was wet through the fabric from condensation. And it's heavy by a pound compared to others in its category. It's roomy, and the collar is a nice addition for the price. I also appreciated the water bottle compartment in the toe box. On value alone it gets a 4. But more importantly, it doesn't compare to other bags for the intended use. If I was on a shoestring budget it would be a tough call because when you're cold, wet and shivering the $100 or so you saved isn't what's running through your mind. For another $140 you can have a Feathered Friends bag (Lark) that sleeps warmer, is much more water resistant, and weighs over a pound less.

5 5

great bag

I have the long version. I'm 5'11" 225lbs and this bag is perfect for me, it could definitely handle someone a bit taller than me but not much wider than than I am, lol. It is very warm at sub freezing temps...I have not nor do I intend to test it all the way down to zero degrees but I'm confident it would be at least comfortable at that temperature. I the draft collar is a nice touch and the hood cinches up nice and tight for those extra-cold nights.

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