The combined power of Pertex Microlite and 850+ fill down is a beautiful thing.
- EN comfort-rated at 50-degrees F for mild summer conditions; lower-limit-rated at 43-degrees F for occasional use during late spring or early fall
- Premium 850-fill goose down packs down well, rebounds nicely after repeated compression, and features a high warmth-to-weight ratio
- Ultralight Pertex Microlight ripstop shell is highly breathable, water-resistant, and resists abrasion and wind like a champ
- DWR finish on the fabric repels frost, dew, and condensation
- Down-filled full-length draft tube protects against areas where cold can creep in unexpectedly
- Nautilus 6-baffle hood wraps around your head and provides 3D protection against heat loss
- Hood Muff is a warm down gasket around the face designed to keep heat in while keeping the drawcord away from your face
- Sewn baffles save weight ensure that the insulation stays in place so you don't suffer cold spots
- Stretch tricot baffles at foot and head regions extend the life and shape of bag and improve warmth retention
- Large trapezoidal foot box decreases constriction at the bottom of the bag
- Ground-level seams help prevent heat from escaping upwards through seams
- Nylon stuff sack and a storage bag included
- Filled and finished in Santa Rosa, California
Terms And Conditions
This Usage Agreement (the "Agreement") governs your conduct while using various services on the web site Backcountry.com and its affiliate web sites (collectively, the "Site"). All references to "we," "us," and "our" shall mean Backcountry.com and all references to "you" and "your" shall mean the user of the Site and Site Services. This Agreement applies to various services and activities on the Site as well as to gear review and product ratings (collectively, "Site Services"). Please read this Agreement carefully.
BY ACCESSING, BROWSING, AND USING THE SITE, ANY SITE SERVICES AND OTHER SERVICES THEREIN, YOU AGREE TO BE BOUND BY THIS AGREEMENT AND ITS TERMS. IF YOU DO NOT AGREE TO THIS AGREEMENT OR ANY SUBSEQUENT MODIFICATION THEREOF, DO NOT ACCESS, BROWSE OR OTHERWISE USE THE SITE OR SITE SERVICES, INCLUDING THE SUBMISSION OF ANY REVIEWS OR COMMENTS.
Any comments, reviews (including gear reviews and product ratings), posts, feedback, questions, answers, notes, messages, images, video, audio, materials, documents, data, graphics, ideas, suggestions or other communications (collectively, "User Content") you submit on the Site are not private or proprietary. By submitting User Content on or through the Site, you grant, assign and transfer to Backcountry.com all of your rights, title and interest, including without limitation, all intellectual property rights and moral rights, in and to such User Content. To the extent the preceding assignment and transfer is ineffective, you hereby grant Backcountry.com an irrevocable, royalty-free, worldwide, perpetual right and license to use, copy, modify, adapt, display, publish, archive, store, distribute, reproduce and create derivative works based upon such User Content, in any form, media, software or technology of any kind now existing or developed in the future.
By submitting such User Content on or through the Site, you are confirming that (a) you are the sole author of the User Content and the User Content originated with you and not copied in whole or in part from any other work; (b) you have obtained all necessary permissions associated with the User Content, including without limitation permissions relating to copyrights, trademarks, rights of publicity and/or rights of privacy; (c) the User Content does not contain hate speech or profanity and is not unlawful, threatening, abusive, harassing, tortuous, defamatory, vulgar, libelous, obscene, racially, ethnically or otherwise objectionable, an invasion of another's privacy, or otherwise in violation of this Agreement; (d) that you are not a minor and have the legal right and capacity to enter into and comply with this Agreement; (e) such User Content does not and will not, in any way, violate or breach any of the terms of this Agreement; and (f) Backcountry.com shall not in any circumstances be required to pay or incur any sums to any person or entity as a result of its use or exploitation of the User Content.
With respect to your conduct on the Site or while using the Site Services, you agree not to: (a) attempt to disguise the origin of any User Content transmitted to the Site Services whether through the Site or any third party site; (b) act in any manner that negatively affects other users' ability to use the Site and Site Services; (c) impersonate any person or entity, including without limitation, a manufacturer or owner of any product, or falsely state or otherwise misrepresent your affiliation with a person or entity; (d) interfere with the Site or Site Services, or servers or networks connected to the Site or Site Services, or disobey any requirements, procedures, policies, or regulations of networks connected to the Site or Site Services; (e) upload, post, or otherwise transmit any User Content that with respect to the Site Services: (i) is not relevant to the product, service, person or entity being reviewed; (ii) you do not have a right to transmit under any law or under contractual or fiduciary relationships (by way of example but not limitation, inside information, proprietary and confidential information learned or disclosed as part of employment relationships or under nondisclosure agreements); (iii) contains software viruses or any other computer code, files or programs designed to interrupt, destroy or limit the functionality of any computer software or hardware or telecommunications equipment; or (iv) is unsolicited or unauthorized advertising, promotional materials, "junk mail," "spam," "chain letters," "pyramid schemes," or any other form of solicitation.
User Content does not reflect the views of Backcountry.com, and Backcountry.com does not represent or guarantee the truthfulness, accuracy, completeness, timeliness, integrity, quality or reliability of any User Content, nor does Backcountry.com endorse or support any opinions expressed in any User Content. In no event shall Backcountry.com have or be construed to have any responsibility or liability for or in connection with any User Content, Any gear reviews and/or product ratings submitted on the Site, if displayed, are displayed for entertainment and informational purposes only. Under no circumstances will Backcountry.com be liable in any way for any User Content, including but not limited to, any errors or omissions in any User Content, or for any loss or damage of any kind incurred as a result of the use of any User Content posted, emailed or otherwise transmitted via the Site or Site Services.
If Backcountry.com determines, in our sole and absolute discretion, that you or any User Content you submit violates this Agreement, we reserve the right, at any time, without notice and without limiting any and all other rights Backcountry.com may have under this Agreement, to: (a) refuse to allow you to submit further User Content; (b) remove and delete your User Content; (c) revoke your registration and right to use the User Content Submission Features; and (d) use any technological, legal, operational or other means available to enforce the terms of this Agreement, including, without limitation, blocking specific IP addresses or deactivating your registration, access to the Site and Site Services using your e-mail address, and your user name and password. Without limiting the foregoing, once User Content is submitted to the Site, Backcountry.com may take any or no action with respect to such User Content, including without limitation, deleting, editing, modifying, rejecting, or refusing to post such User Content, but is under no obligation to offer you the opportunity to edit, delete or otherwise modify User Content once it has been submitted. Backcountry.com shall have no duty to attribute authorship of User Content to you and shall not be obligated to enforce any form of attribution by third parties.
If, despite the foregoing assignment and transfer of rights in the User Content, it is determined that you retain moral rights (including the rights of attribution or integrity) in the User Content, you hereby declare that: (a) you do not require that any personally identifying information be used in connection with the User Content or any derivative works of or upgrades or updates thereto; (b) you have no objection to the publication, use, modification, deletion and exploitation of the User Content by Backcountry.com or its licensees, successors or assigns; (c) you forever waive and agree not to claim or assert any entitlement to any and all moral rights of an author in any of the User Content; and (d) you forever release Backcountry.com, and its licensees, successors and assigns from any claims that you could otherwise assert against Backcountry.com by virtue of any such moral rights.
You are prohibited from violating the security of any system or network compromising the Site or the Site Services, including but not limited to the following: (a) unauthorized access to or use of data, systems, or networks, including any attempt to probe, scan or test the vulnerability of the Site or Site Services or to breach security or authentication measures; (b) unauthorized monitoring of data or traffic on the Site or of the Site Services; (c) interference with the Site or Site Services including without limitation, any type of flooding technique or deliberate attempt to overload the system such as denial or service attacks; (d) forging of a message header or any part of a message header; or (e) using manual or electronic means to avoid any use or access limitation placed on this Site or the Site Services. Such violations may result in criminal or civil liability.
Backcountry.com reserves the right to report any activity or persons that Backcountry.com suspects has violated any law or regulation to appropriate law enforcement officials, regulators, or other appropriate third parties (including the disclosure of appropriate subscriber information). Backcountry.com may also cooperate with appropriate law enforcement agencies to assist in the investigation and prosecution of any illegal conduct. Indirect or attempted violations of this Agreement and actual or attempted violations thereof by a third party on behalf of any user shall be considered violations of this Agreement by such user.
BACKCOUNTRY.COM DOES NOT ENDORSE THE USER CONTENT, IS NOT RESPONSIBLE FOR THE USER CONTENT AND SPECIFICALLY DISCLAIMS ANY RESPONSIBILITY OR LIABILITY TO ANY PERSON OR ENTITY (INCLUDING, WITHOUT LIMITATION, PERSONS WHO MAY USE OR RELY ON SUCH USER CONTENT) FOR ANY LOSS, DAMAGE (WHETHER ACTUAL, CONSEQUENTIAL, PUNITIVE OR OTHERWISE), INJURY, CLAIM, LIABILITY OR OTHER CAUSE OF ANY KIND OR CHARACTER BASED UPON OR RESULTING FROM ANY USER CONTENT PROVIDED THROUGH THIS WEB SITE.
Share your thoughts
- Familiarity: I've used it several times
This is a reasonably priced (because you can regularly find it on sale for 10~20% off) and a very versatile sleeping bag that you can use as a 3 season bag if you sleep cold.
I've used it down to low 30s in just base layers at Shenandoah in November last year with Thermarest Trekker with a relatively low R-value of 2.0; I won't say I stayed warm, I felt cold during the night, but it wasn't horrible either. I'm 5'11", 170~180lbs (depends on the season), circumference around my shoulders (so the widest part of my body) is about 47", and the regular fits me very well in that it keeps in the heat well yet it leaves me enough room inside so that I don't feel cramped. The Pertex inner lining is silky smooth to touch.
The bad (minor):
My regular WITH the stuff sack weighs 22.7 oz (the stuff sack is 0.6 oz), so mine weighs about an ounce more than it's listed. The zipper can get caught at times despite the zipper guards, so that's the only minor complaint that I have.
Overall, a very solid 2/3 season bag (depending on how cold you sleep), and can compress very small if you like to pack light for your trips.
Love it. Very light, packs very small and a great bag for my Utah spring-summer-fall trips. Used it for about a year now. Seriously, very happy with it.
Hi, Im not normally a cold sleep, i got this to replace my 30 deg (mammut synth bag) bag because it was way too warm. i've only had it down to about 8 or 9C and was really cold, even with icebreaker 200 wool and a hat. do you think i got a under-filled bag? Im not a cold sleeper normally, quite the opposite in fact. im not sure what to do.
Compresses well, immensely comfortable, unbelievably lightweight (a large Arnold Palmer weighs the same), and far warmer than its temperature rating suggests. The 850 fill down gives it an advantage over its brother, the Marmot Arete.
It's closest competitor is the Mountain Hardwear Phantom 45 but the Atom has a higher fill power, and additional fill weight contained inside. The Pertex coating is nice, allowing the bag to easily shed the cold dew of an early morning or negate any condensation problems your tent might have.
Get it, you won't regret it.
Very nice very very light. I just got it so I can not comment on warmth yet but ill check back once the weather warms up a bit. This Atom has a pertex shell not the lightforce nylon of years past. although it has the same dimensions as the pinnacle and arete bag it is not as roomy. shoulder girth is the same but seems smaller in the elbow area for some reason. Still comfortable though. I am 6 foot 3 225. Packs super small and plan to use it as a bag liner in my pinnacle bag for the rare below zero camping trip, and obviously as my summer bag.
What the heck is a draft tube???
It is that extra strip of material on the inside of the zipper that ensures that you do not have draft coming through the zipper area.
It insulates the zipper to help retain body heat.
In this picture (not a Marmot though), you'll see the draft tube. It's the long, black insulated tube that runs down the length of the zipper. In the foreground, you'll also see the green draft collar that insulates around your neck between the hood and the body of the bag. Both are important features to look for in quality mummy bag construction.
Not really a question, but important nonetheless. The Marmot Atom is a sweet bag and I'm not saying don't buy one, but isn't the lightest 3 season out there. The Western Mountaineering Summerlite is a 32 degree down bag that weighs in at 1lb 3oz. So, sorry to be a bubble-burster. I love my Marmot Lithium, but I also love my summerlite.
The description says it weighs 16oz, this is incorrect. The reg. is 21.52oz according to Marmot.
Two cents... Happy Trails!
MTHW's Phantom 45 is also a bit lighter, 1-2 oz :)
I did a lot of research to find the right sleeping bag for 30-50 degree nights. I narrowed it down to the Marmot Atom and Big Agnes Horse Thief. I had trouble deciding which to get so I got them both so my wife would have one. My wife and I were both cold all night in the Horse Thief, which I returned because it was badly over rated and over priced for the way it performed. I really liked the design and wanted it to work but you cant sleep shivering. The Atom performed better than expected. I slept comfortable in a 1-person tent on nights of 30 and 33 degrees with long underwear. Very comfortable and packs easily to near nothing without a compression sack. It warms up instantly and is so light you can not feel the bag on you. Good product!
Recently I bought a Marmot Atom and I was highly impressed by its weight and excellent design. However, when I tested this out camping in Northern Chile for a week with temperatures of between 5 and 10 C (40 and 50 F) I had an unpleasant discovery: this bag is nowhere near capabale of its supposed minimum. Even with my entire stock of warm clothing on I just managed it keep warm. Basically it seems the reason Marmot was able to make this bag so light is that they didnt put any down in it. My advice: this is a good bag but buy one that has a much lower rating than your needs
Does this bag come with a stuff sack?
Yes it does.
A generous size storage bag is also included.
Took this bag on a 4 day trip in the Enchantments and have no complaints. It's light and packs very small. At temps in the low 50s in a Rab eVent Superlight bivy it was plenty warm. I'm looking forward to some cooler nights to see how low I can go with this thing. I'm 6'1" with broad shoulders and have enough room to move around in the long version. I'm very happy with the warmth to weight ratio.
So far this bag is great. Comfy, soft, and lightweight, and packs up great. This bag doesn't come with a stuff sack though, you have to purchase that separately.
This bag is wicked light - which is why I wanted it in the first place... however, It's not quite as warm as I hoped. I use it with a THICK thermarest camp rest and inside an OR GoreTex Bivy. I sleep very warm typically, but have been chilled on a few late september trips where I doubt the temp dropped much if any below 40 degrees. Had to put my down vest in with my feet. There was a bit of wind exposure in both cases. With my wide pad in the bivy i get cold spots where there's any pressure on the bag. Still a good bag and works well up to September as long as you don't get a cold front. I'm used to temp ratings in my Western Mountaineering bags easily exceeding the rating so was slightly disappointed. If weight's your main deal and you don't intend to push the rating this is still a fantastic choice. If you're thinking full 3 season bag (October) in the rockies, better rethink and get a 20 or 30 degree bag minimum.
The Backcountry description says 1Lb or 16oz, but under the Tech Specs and other places I've checked it says 1lb 5oz or 21oz. Which one is it? Is the actual bag itself minus stuff sacks 16oz? Otherwise it's hard to see why you'd pick this over the 24oz Marmot Arete? Thanks in advance
1 lbs 5 oz / 610 g
The other reviewers have pretty much hit it on the head. This bag is amazing. First, it fits into an XXS stuff sack fairly easily, takes no more than 3 minutes to stuff it. When you take it out of the stuff sack, i would estimate it takes about an hour to get its full "fluff" back. At first, I was weary because it doesn't appear to have a much fill as my old Conness, but after using it on some cold nights, my worries were abated. This will keep you warm below 40deg, I used it at around freezing (guessing because there was frost on the ground) and it was plenty warm. Combine this with a NeoAir and you have a sleeping set-up that's around 2lbs 3oz. Not bad for the ultra-light nuts such as myself. Another added plus, Marmot gives you a nice big storage sack for your bag when your not using it.
This bag is great. I had a regular (read short), fat, and heavy 30 degree synthetic that weighs 3+ lbs before I bought this. Now my long version Marmot bag weighs in at 1lb 10oz and packs down super small. It's true to the 40 degree rating and great for spring summer and fall. I've even thrown in a lightweight fleece liner and slept comfortably below freezing at Blue Lakes near Ridgway, CO. Would definitely recommend! (I found this for cheaper at another site but wanted to buy from backcountry because they're awesome...and they matched the price)
What´s the best choice for a three season sleepingbag, Marmot Atom or Western mountaineiring Ultralight?
And between Marmot Hydrogen or Western Mount. Alpinlite? What are the differences between their outer materials? What is the maximum stuff size for both models?
All of the 850+ fill Marmot bags are incredible. The atom is my spring, summer, and fall bag. Get a helium for a winter bag. I've used it below freezing and broke a sweat in this bag. This bag is insanely light and packs so small. Don't waste your money on other bags. It's expensive but worth every penny. I'm 6'0 and use the long.
How waterproof/resistant is this bag? I'm looking for something to sleep in the open air with - on 60-70 deg nights that consistently rain for 10-20 minutes per night. I'd appreciate your recommendations!
At the very least you'll need a bivy sack. This sleeping bag by itself would be totally useless in any kind of rain. Considering your usage, I'd choose a bag with a Dryloft/Gore-Tex/GWS shell in combination or even a synthetic. Check these out to compliment this sleeping bag: