NEMO - Disco 15 Series

I vote for Nemo bags. I have 2 and love them. Perfect for side sleeping.

It’s all about a good sleep system. I have a 15 degree Nemo bag and an XTherm pad. Throw in a hot water bottle and I’m toasty all night. Just sleep in a base layer.

I have had a nemo disco 15 bag, two EE and now a Zenbivy 10 degree light bed with half sheet. The Zenbivy is by far warmer than EE and to the moon and back more comfortable than EE and the Disco. I was skeptical of Zenbivy but it is a quality product. I use a Ultra 3R exped pad for three season and a 5R in cold season.

This. I hate mummy bags. I move too much in my sleep. My Nemo takes up a bit more space in my pack but it is so comfortable and a good night’s sleep, where I can fully roll around in my bag, is worth it. I will never go back to a mummy bag.

Nemo for sure

Spoon shape is great, arm zippers in the boost just seem drafty.

I’m a stomach/side sleeper and love my Zenbivy quilt+sheet and their matching pillow system, but it’s quite an investment for a casual camper. I’d recommend looking for a cheaper quilt or even a rectangular sleeping bag on Amazon or Decathlon if you’re not looking to spend a lot. I was really unhappy with my spoon shaped Nemo sleeping bag. Even though it’s wider than a traditional mummy bag, it was still restrictive. There are a lot of other spendy quilt brands out there and most have already been reviewed on r/ultralight.

I have a disco 15 and love it. Alternatively you can get a fleece bag liner to add some warmth that way instead of a whole new bag.

I love my disco. The shape is soooo much better than a mummy shape

Nemo Disco is the way to go.

I think your pad is a bit over the top for the Rockies for 3 season but too much is better than too little. I use a 15 deg Nemo Disco 650 down had it for five years and have its perfect. I’m about to hand it down to my son and buy the new version, might splurge for the 800fp just to save to 100g! I do take thicker base layers in the late season.

If you’re fine with a mummy bag get the Coda, it’s a bit lighter and warmer. I got the disco as I’m a side sleeper, I find the extra room makes a difference for me. I haven’t tried a quilt and probably never will, drafts are a thing and the weather in the mountains can change drastically, I know I’m good in a bag. I misspoke before, getting the Riff to replace the Disco. Riff basically a lighter disco.

First - are you positive you want to zip together with your partner? I did your same plan \~15 years ago. Got 2 bags and zipped them together. It was cute. At first. Then we soon became cramped / cold. We almost always preferred to be in our own bags vs. zipped together. After the novelty of zipping together wore off - it really wasn't useful. Just saying... don't spend the extra money / effort or limit your options for this feature if you don't really need it. If you still want the zip together bags - you are looking for sleeping bags that have 'left' and 'right' zippers. Buy one left and one right. At 15F nights - you want a 5F or 0F rated sleeping bag. Or a 15F bag plus a liner for the colder nights. Are you sure you want a traditional mummy bag? I personally prefer down quilts. They pack smaller and are more comfortable than my mummy bag. They also work well when 2 people are together. Snuggle under the blankets, but then go into your own cocoon for the night time. **What is your budget?** It looks like Mountain Hardware does mens zippers on left and womens zippers on the right. * [https://www.rei.com/product/235362/mountain-hardwear-bishop-pass-15-sleeping-bag-womens](https://www.rei.com/product/235362/mountain-hardwear-bishop-pass-15-sleeping-bag-womens) * [https://www.rei.com/product/235363/mountain-hardwear-bishop-pass-15-sleeping-bag](https://www.rei.com/product/235363/mountain-hardwear-bishop-pass-15-sleeping-bag) Nemo does the same: * [https://www.rei.com/product/228439/nemo-disco-15-endless-promise-down-sleeping-bag-womens](https://www.rei.com/product/228439/nemo-disco-15-endless-promise-down-sleeping-bag-womens) * [https://www.rei.com/product/251886/nemo-disco-15-endless-promise-down-sleeping-bag-mens](https://www.rei.com/product/251886/nemo-disco-15-endless-promise-down-sleeping-bag-mens) This is a unique option too: * [https://www.rei.com/product/231206/sea-to-summit-ascent-15f-sleeping-bag](https://www.rei.com/product/231206/sea-to-summit-ascent-15f-sleeping-bag) The North Face Cat's Meow was the one I had with L/R zips. But it looks like they took that feature away. I was also going to recommend the Kelty Cosmic Down as a cheap/budget option - but they also look to only sell right zip bags.

Nemo sleeping bag with REI 2.5 self inflating sleeping pad works for me.

I have 2 Nemos. I love them.

Just got back from Algonquin where the temps dropped to 3 degrees C. I was comfy in my fairly new -9 degree C Nemo down bag wearing long base layers only, but I felt if it got below freezing I would need some additional layers. Other commenters are giving good advice when they say a good sleeping pad makes a big difference, especially if the ground is already cold (not just air temps dropping at night). Don't trust temp ratings of cheap bags and aim for something with a rating 15 degrees below the coldest you could expect it to possibly get.

I have that Nemo Disco 15 and it’s killer but hoooooly cats does it sleep warm. I’m going to have to get something else to use in the summer.

I have a disco and its pretty good used it like a quilt so often I ended up going for a quilt, Specifically a zenbivy, its also good, I set it up with one side fixed to the sheet and the other mostly free. Like sleeping in a bed.

Never tried a quilt, but as a fellow side sleeper I LOVE my Nemo sleeping bag. Can't believe I ever tried to use a mummy bag.

I can confirm that the nemo disco is down, reasonably light and compact, and zips together. I can also confirm that you don't have a whole hell of a lot of room in the combined bag, and if you're a twitchy sleeper - I am - the person sharing the zipped together bag will probably regret that choice before morning.

I have the Nemo Disco 15 down sleeping bag and LOVE it. The Nemo bags are designed for side sleepers as they’re less constricted. Also, I’m a tall female (5’10) and most women’s bags tend to be too short for me. I suspect the men’s bags also have that extra length. Nemo makes both down and synthetic bags…I used to have a synthetic one and I liked it, but the down one is lighter and warmer. Also, I tend to get very cold at night. I have circulation issues and my feet will end up ice cold. The Nemo disco 15 with a warm rated sleeping pad has kept me good for the most part.

I just got the Nemo Disco 15 and even in nights below freezing I was SWEATING. It's super comfortable though.

i run cold and don't love the leg constriction of a mummy. i recently purchased a nemo disco 15 (women's long) and used it on a desert backpacking trip last month. one of the nights was stormy and temps dropped well into the teens and i was actually HOT and had to open the vents to cool off a little. it's heavy (3.5lbs) but i loved it so much for how well i slept that night.

Nemo Equipment men's and women's zip together and the Disco line (I think that's the one that's down, not synthetic) is very compressible. They're also spoon shaped for side sleepers. I have one that I'm not longer using since I went to quilt life. I have zipped the men's Disco with a women's Forte with zero issues at all! It's this one (https://www.rei.com/product/163032/nemo-disco-15-sleeping-bag-mens (Torch/Stormy Night) and if you're interested in buying, I'd be happy to list it on r/geartrade for you (to go through a slightly more vetted process). EDIT: added more info

I like the spoon shape of the Nemo bags. And, I’m currently using a wide deluxe pad from Big Agnes.

Love my Nemo down bag. Love.

I have a nemo disco 15 and feel it's worth the hype

Buy a second bag of the same model and brand . ZIP them together and make a single into a double bag. It’s a game changer!

I recently went camping in 14-degree weather with the Nemo Disco 15. Generally the “comfort” temperature of a sleeping bag is 10-15 degrees higher than the listed rating, so I supplemented it with a down quilt on top and wore a wool base layer plus a light down jacket and a hat and double socks. I stuffed a wool sweater in the bottom of the bag around my feet. The only issue I experienced was that my air sleeping pad, which is insulated with an R value of 5, started feeling cold. It couldn’t compete with a temperature that low. Fortunately I had layered it on top of a closed cell foam z-fold pad, so I just let the air out and was ok. In the future I would probably put a quilt under the sleeping bag. All that said, my son has a Kelty Cosmic 0-degree bag, and he said he was toasty warm the same night. It’s a pretty good value for what it is.

Nemo disco 15!

Lifelong backpacker and Camp Lead here: - REI Flash 55 tent - Big Agnes Rapide sleeping pad - Nemo Disco or Forte bag (Disco is my pref) - get any 2P backpacking tent out of your local store's re/supply

I used a nemo disco for a while and it was ok. Now I use a zenbivy quilt and won't go back to a bag.

My advice: NEMO women's Disco 15. First off, sleeping bag temps (ISO/EN) are rated for slight discomfort. If you want to be mostly comfortable at 30F, you get a 30F bag; if you want to be warm and toasty, you get a 20F bag. If you think temps may drop into the 20s but may realistically be 30s, you should get a 20F bag; if it hits 20F, you're fine but you'll otherwise be toasty. Women's bags are rated at the Comfort rating which is toasty and nice for a warm sleeper, slightly uncomfortable for a cold sleeper - which is the assumption for women. Also what it sounds like you may be: a "cold sleeper"/someone who likes to be warm at night. Know that you can - and should - try other gender bags for fit as you may find better fits across genders. But keep in mind there is ~10F temp difference between men's fits and women's fits (men's will be colder for cold sleepers, women's will be warmer for warm sleepers) and so don't just trade 30F for 30F. In your case, use the "Comfort Rating" as your slight discomfort temperature and adjust from there. Know also that this may work against you price-wise; they do not price based on fill, they price based on advertised temp. So a women's 30 will be the same warmth as a men's 20, but will be priced as a 30, not as a more expensive 20. So the Magma and the Disco may not be warm enough for what you're looking for. Of the listed bags, they'll fit in order of how you listed them: Disco will be the widest, then Big Agnes, then the Magma. The Magma is a true backpacking mummy and won't be ideal for a side sleeper. The Disco has extra space in the shoulders and hips which are ideal for getting on your side in the bag. So for a cold sleeper who sleeps on their side and is likely to have some 20F but maybe mostly 30F nights - NEMO Disco 15. Should check all of the boxes. The one big difference between the NEMO and the Magma is down fill power, which also impacts compressibility and weight. Magma is an 850 while the Disco is probably around 650-700. If you want a similar fill power bag go with the Riff 15. 850 fill down also warms up quicker because the feathers are smaller. It will also probably be more on par price-wise with the Magma. The Riff has all the same features as the Disco though may have a slightly slimmer shape. If you can, go to your local REI and get in each one to see which are comfortable and which are not. But based on the info you've given, I'd suggest either a Women's NEMO Disco 15 or NEMO Riff 15.

That's surprising, the disco has plenty of tossing around room. I would definitely suggest switching to a quilt and comfy thermals.

Im a side sleeper and a turner at 6'3" and 230 pounds. The quilt is great. However, if it is so cold you want an enclosed sleeping bag, I personally carry the Nemo Disco 15 large. I open this and use it like a quilt at times. https://www.rei.com/product/251886/nemo-disco-15-endless-promise-down-sleeping-bag-mens

I am 6'3" 230lbs and I just acquired a Nemo Endless Promise Disco 15. It combined with a good sleeping bag liner should have me good for backpacking and winter camping. Comes with a compression pack. If you purchase gifts cards to then purchase you can save another 15% ( Purchase an REI gift card Members, buy a $120+ REI gift card thru Dec 12 and earn a 15% digital bonus card!) Currently on sale at REI. https://www.rei.com/product/228441/nemo-disco-15-endless-promise-down-sleeping-bag-mens

I just went through all the back and forth on this issue for a new bag myself. Settled on the Neno 15 Disco bag Endless promise - Tall. It is not perfect but it is a good upgrade as a down bag plus on sale at REI currently. I'm a side sleeper, and I toss and turn ( hence the disco). I'm also 6' 3" Reasonable price. And can improve with a bag liner for extra comfort and warmth. https://www.rei.com/product/228441/nemo-disco-15-endless-promise-down-sleeping-bag-mens

I'm a 230 lbs 6' 3" guy and this is a great bag for me. Used in 19F and it was warm. I am a side sleeper so the ability to turn helps a lot.

Tent: MSR or Nemo, sleeping bag: Nemo (the lightest warmest I’ve found) knife folding knife I’d use a Swiss army “Ranger” model, if its a folding knife sans that I’d use a fixed blade like a Pathfinder knife shop “scorpion or Kephart” the kephart is my favorite personally. It’s always good to have multiple tools for sure sometimes they fail. Additionally if you’re going to be in any remote areas take 2 ways to make fire whether that’s 2 lighters or a lighter and a ferocerium rod doesn’t matter. Ans water water water, and some way to filter said water. I’ve had situations even near or in towns where I needed water and had some but couldn’t purify it and a metal container of you can canteen or stainless non vacuum single wall water bottle if you have that and fire you’ll have purified water. Enjoy your walk sounds like fun to me

Budget is a factor, as well as intended use (backpacking vs ultralight speed hiking) Down will be lighter (and more expensive) than synthetic fill I have a Nemo bag and a few different thermarest pads depending on the season I also have a couple Big Agnes (they are great for bigger people) bags, but they do not have any fill on the bottom, instead they rely on the sleeping pad. There's a whole interesting theory about this design if you care to research it! You can talk to the folks at Hiker Direct and they are big supporters of scouting. We've got folks that have really good luck with Nemo, Kelty, Hyke and Byke (online sales only), and some others, too. GearLabs reviews is pretty thorough if you want to really dive into the numbers and test process before you buy.

I see Nemo has been mentioned a lot, which is what I came here to suggest for a sleeping bag with a Klymit sleep pad. We do a lot of tent camping each summer. Some pack in, some drive in, some canoe in, but always in a tent and always on the ground. As we’ve aged I have been concerned we wouldn’t be able to continue sleeping on the ground, but the Klymit has never let us down. We’ve had our pads for over 11 years and only this year did we finally “upgrade” to the wider version. For sleeping bags, the Nemo spoon, down filled was our choice. Lightweight and has been excellent for MN camping. Good luck!

Wife and I both have the disco 15 in women. The men costs more but they're both the same bag.

True. Just from the posts in this sub it seems everyone’s number 1 priority is comfort. Which I can’t argue that the disco is probably one of the most comfortable bags

I might have been 10 of the mentions on the Disco 15 series. Oops.

Also a side sleeper who tosses and turns all night. I love the Nemo Disco and now have 2, a 15 and a 30 in down. I use at least a 3” thick pad. I rarely use the hood part of the mummy and it’s been fantastic.

I’m a side sleeper as well and found the Nemo down bags to be perfect.

Love my Disco 15. I'm 100% a side sleeper and I'm often riding up around the frost line even in the middle of summer where it still gets pretty cold at night.

Quilts, semi rectangular bags (Sea to Summit Trek and Ascent Down) or the Big Agnes Sidewinder series are what you want. The Nemo Spoon series of down bags are also quite roomy. I sleep on my side. I use Hammock Gear Econ Borrows most of the time and I have a Marmot Col -20F bag for anything 20F and below.

I was also going to suggest the Nemo Discos, you beat me to it lol. I'm pretty sure most manufacturers make it *possible* to connect their mens/womens bags with the opposite-side zipper just on account of using the same zippers, but Nemo are the only ones I recall advertising it as a feature. It would certainly be a good place to start.

Love my Nemo bags and always recommend them. Great product, great customer service and repair, and good price. And they make bags that are specifically cut to minimize dead space but accommodate side sleeping. https://www.rei.com/product/228442/nemo-riff-15-endless-promise-down-sleeping-bag-mens A few other things to keep in mind: - A great bag is useless without a pad. Make sure you factor that into your investment if you haven’t already. - A 20 degree bag might keep you safe in 20 degree weather, but you won’t be happy about it. I want a 0 degree bag if camping in anything below freezing. (But I am a small-ish woman who runs cold.)

Nemo bags are extra roomy yet pack down tiny. Love mine wouldn’t use anything else

I have the women’s endless promise Nemo 15 and I literally love it. The material is so warm, so so soft and I feel like I have lots of space to sprawl out while still keeping warmth. Also love the gills to let help regulate temp

I have the women’s disco 15 and enjoy it. It’s roomy and comfy as a side sleeper. There’s a pocket to put a pillow or stuff with a jacket. And it keeps warm without overheating. I run cold so I pair it with a s2s liner.

I love my Nemo disco 15. Most comfortable bag out there. Other mummies made me feel too claustrophobic around my feet and knees. It is on the heavier/large side but if you don’t think weight is an issue, I would recommend it.

I have the Nemo Disco and love that thing. I am 5'9 and 200lb and toss like fish on a hook at night..lol. I do strictly car camping and wanted something lighter than my old Teton sleeping bag without much restrictions. After reading many reviews, I opted for the Nemo.

I am a side sleeper and I vested in a Nemo Disco 15 and I've never been more comfortable in a bag. They widen out the foot box a lot, I also have wide hips and shoulders and have no issues rolling 360 inside the bag

I’ve got a nemo bag goes down to -9c Nice bag 600 fill down so jt compresses well, and good for side sleepers, I think it’s called the disco. They have a similar one with 800 fill so it’s even lighter and more compact as well

Ya it’s a nice bag. Had it for a few seasons now down to about freezing and I get through the night fine

I’ve never had an issue with it at zero. I haven’t taken it down to lowest levels of the rating. I also have a r4.5 sleeping pad, I sleep in smart wool top and bottom and use a sleeping bag liner. The liner I’ve always used simply because it’s easy to clean and keeps my bag from getting dirty.

Smart. Anyway In general I do believe the Nemo is a bit cooler than some because of the shape which means more air space. I guess it's the downside of allowing comfortable side sleeping.

The new version of the Disco 15 Men's Regular has an advertised compressed volume of 6.4 liters. The Disco 15 Women's Regular is listed at 8.8 liters. So a little over 15 liters combined.

The new version of the Disco 15 Men's Regular has an advertised compressed volume of 6.4 liters. The Disco 15 Women's Regular is listed at 8.8 liters. So a little over 15 liters combined.

I have the Disco as my car camping sleeping bag. I have a Sea to Summit more ultralight down bag for backpacking. The Disco is warm and comfy, plenty of room, and I like the gills!

Agree. For a recent cross country trip,I had thrown a Rumple in my car, to use at campsites, but wound up using it several nights in place of my Disco. (But I did love the Disco for the nights near the Grand Canyon when temps were in the high 30s.)

Same!! I love it to pieces but even with the vents open I still end up halfway out in the morning during the warmer months lol

I love my Nemo down Disco 15 Sleeping Bag . Best sleeping bag I ever had. It is packed small and lightweight and super spacious.

Nemo down sleeping bag. My most expensive and by far my favorite sleeping bag.

Go with the REI Magma 30, it's ultralight, packs small, and perfect for 45°F with an underquilt. It's 329 on rei official website. Many reviewers highlight how it’s easy to vent or cinch, works great as both a quilt and a blanket, and is ideal for backpacking or hammock setups. On the other hand, you coulld also take a look at NEMO Disco 15, maybe an overkill for 45°F but insanely comfy and reliable — great long-term buy if you value warmth and durability over pack size. FWIW, I recently did an analysis on Reddit data for sleeping pads. Basically ranked them by aggregated sentiment. Maybe you'll find it helpful [https://redditrecs.com/sleeping-pad/](https://redditrecs.com/sleeping-pad/) You can filter and get a breakdown of what ppl have said about the most often recommended ones (disclaimer some links are affiliate they help fund the analyses)

I had the same problem. Bought a Nemo something which had a wide center. It helped but I still couldn’t sleep. I switched to a quilt that strapped around a pad (enlightened equipment I think) and it is an absolute game changer. Super roomy and very warm. I mean I still don’t sleep but it is no longer because of the sleeping bag.

Love my Nemo Disco!

I have the disco as well and I love it. I use the Nemo Jazz for car camping and the disco for backpacking

Thank you! Originally I had ordered a cheap sleeping bag off Amazon, but then I got to thinking that they might be called in Algonquin. So I ordered the disco. It was on sale at MEC. I like it because it's a little bit wider than the mummy ones. It's worth the investment to me to be warm!!!!!

OH MY GOD I went on my first every camping trip to Algonquin this weekend and the Nemo Disco SAVED MY LIFE!!!! It poured rain for 14 hours straight :(:(:(:(:(:( But the sleeping bag kept me warm thank GOD. It was my saving graces TBH. My tent was leaking a bit so the bag got a bit wet but still kept me warm. Pulled it over my head and snuggled in. This weekend was a very serious initiation. It can't get any worse than the deluge we experienced lol.

I started off with the Nemo Disco. I’m a side sleeper and that bag allows me to move around without the mummy bag feeling. My son is camping with me so he got that sleeping bag and I upgraded to a Zenbivy. Game changer. Sleeping quilts are awesome and pack down just as well as traditional sleeping bags. Keep an eye out when they go on sale, got my system for 30% off. I got the 0 degree and yeah, if it’s 50 degrees out I have to open it up. At 30 degrees I’m snug as a bug. Haven’t gotten below 30 yet.

Nemo Disco 15, long, works great. Wife loves hers. Currently shopping for a Katabatic quilt. Reallyyyy want one of those.

My NEMO Disco 15 (Mens long) compresses to about 9" X 11"

My buddy has a nemo with the gils that he really likes. Packs almost as small as mine and He got it right when a got a 20 degree alpinlite western montaineering bag before we went on the Grand Canyon. I love my Western Mountaineering, as when I use the baffel I have camped sub 25 degrees in a tshirt. I was also heavily considering a Featherd Friends quilt. I didnt know if it was going to snow/rain/be cold on the river as it was early march. These are definitely the more expensive options. But all and all I really did like the Nemo and was considering getting one for summer car camping. But I spent $600 on a bag so now i just use it as a blanket in the summer. The nemo is the only one I have tried out of your options. I think its a graat option. Cant say anout the others

For clarity - The Riff (and Disco) are down. While the Forte and Tempo are synthetic. Their spoon/peanut shape is definitely very popular with side sleepers, or people who sleep angular or toss and turn. Much more forgiving than a regular mummy, without the draft issues of a quilt. Recommend people getting into quilts, to buy a wide one. This will help mitigate drafts. You mention REI, all of their sleeping bags now come in "wide" versions. Still a mummy for the most part, but about 5" wider than a regular mummy. Their Magma is an excellent bag, as is their Magma quilt, but it's only rated to 30 degrees.

So very many choices. I've always found [Outdoor Gear Lab](https://www.outdoorgearlab.com/topics/camping-and-hiking/best-backpacking-sleeping-bag), as well as [Switchback Travel](https://www.switchbacktravel.com/best-backpacking-sleeping-bags) give some of the most honest, accurate comparisons. I may not agree 100%, but I mostly do, and when I don't, it's for minor reasons. Plus, they don't accept ads, and aren't "influencers". In fact, they buy all the gear themselves! You need to ask yourself some questions though: * How light do you need it? Are you willing to pay another $100 to shave maybe 2 ounces? * How much room do you need? Some are fairly snug mummy bags (MH Phantom, Thermarest Hyperion), some are more roomy (an REI Magma 15 comes in a wide, for example). * Do you like a lot of features? A Nemo Disco has "thermo gills" which help regulate temp, plus a nice draft collar, plus are roomy...all of which comes at a cost in it weighs more. * Still not enough room? Try a quilt. But quilts down below about 20 degree ratings don't make much sense. * Presuming you go down (recommended) most spray their shells with DWR. Some also treat the down (Sea to Summit, Thermarest, others) some don't by purpose (Feathered Friends, Enlightened), but you can do it on your own washing the bag in Nikwax Down Proof, or spraying it with TX Direct. Some bags even have GoreTex shells for extreme conditions. As you can see, it goes on and on. You could go down a real rabbit hole.

I have a Nemo bag and pad and have been quite happy with them both. Particularly if you're a side sleeper or otherwise restless, the Nemo spoon-shaped bags are great. They're not the lightest but they're light enough if you need that comfort. I suggest adding the Big Agnes Rapide to your list of potential pads.

I sold my old bag and got a Nemo Disco 15 and I love freaking love it. The 30 probably would have been fine for me, but I was icy in my old bag (which was a “nicer” Big Agnes 26) so I thought I needed the 15. Even though it’s a little heavier, as a toss and turn side sleeper whose knees and ass used to compress the sides of my mummy bag it’s DREAMY to sleep in. If you toss and turn less, they have a narrower spoon shaped bag called the endless promise that a bit more expensive but lighter (tho the difference really only shows up in the longer versions)

Another reccomendation for the disco 15. I have a 30 and I can't wait to get into it every time I use it but you will get cold with a 30 unless you pad up and bundle up. Most comfortable bag I've slept in as a side sleeper/restless sleeper.

i am also a female side sleeper. i have the nemo disco and i love it. the shape is much more comfy than a mummy shape. i’ve never been cold in it. my vote is definitely for that one!

I have the Nemo disco and am a big fan, was very comfortable in it with an r4 pad when I was out in 25F/-4c sleeping weather

I have the Nemo disco 15 and backpack in the same region (feels like fall today in Chapel Hill and I’m so tempted to pack up and head to the mountains!). Definitely go for the 15 and you won’t need another bag through all the months! I’ve even used it in the early/late summer unzipped and it’s perfection. I’m 5’8” F and got the long. Just make sure you get a decent sleep pad to ensure it can live up to the comfort temp rating.

Which 2 in 1 are you referring to? The ones that come to mind would exceed your budget, but examples help.  What temperature are you expecting at night?  Mainly, I would suggest finding an insulated sleeping pad with a stated R-value. Depending on how cold it will be, the R-value changes (higher R for colder temperatures). For sleeping bag, add at least 10°C, so for example, if you expect overnight temperatures around 5°C, find a bag rated for -5°C.  I have a Nemo Quasar insulated pad in the double width (I move a lot), and a Nemo sleeping bag (in their "spoon" style because I can't sleep in a mummy style bag). 

I really like the Nemo Disco 15. Roomy and light. I’ve been using it for years.

I agree that quilts are probably one of the strongest directions here. If you can stand sleeping bags then lots of Nemo bags have a spoon shape that really lets your shift your legs around which as a side sleeper I really liked.

I have a cot also but would never sleep on it without a pad when it's cold. I need the insulation. I really like the Nemo spoon shaped bags to be able to move around but why not pile up thick blankets for your first time out before dropping the money on a good bag.

It’s fucking cold at night at the higher elevations…like frost on your then cold. But more important than temperature rating is the type of sleeper you are. I can’t stand mummy bags, and so use a Nemo Disco 15f for side sleeping.

I have multiple (temp reasons) Nemo sleeping bags and I absolutely adore them. The fabric is buttery, the gills are great for regulating temp, and they pack down well and loft quickly. I’m a side sleeper also, and I toss and turn a bit at night. My ONLY complaint is the pillow case insert doesn’t work for anything (much) but their own. Also using it means you’ll lose heat so I only use it in warm weather.

I have the nemo disco 15 in the big boy size.  If you get cold easily,  I'd recommend the little bit of extra bulk and weight for the 15. The spoon shape is much nicer than a mummy bag. 

Based on your criteria of comfort, I would recommend the Disco over the Coda because the cut of the Disco is spoon shaped, which is roomy. I have one and it’s my go-to bag in the cold. I can’t speak to the other bags, maybe someone else can comment on those.

I’ll second this. While a bit on the heavy side if you are backpacking, it isn’t prohibitively so. I’m old now and I value comfort/sleep over a few ounces. The spoon shaped bags by Nemo are comfortable and perform in the cold, and the price is decent for a quality bag. I also view the Nemo Tensor All-Season as the best all around sleeping pad on the market. There are a couple options considered a bit more comfortable (namely Rapide SL and Neoloft) but they can’t hold a candle to the warmth, packability, and weight of the Tensor. It checks all the boxes (except inexpensive I guess).

I bought a Nemo Disco 14f and used it in January/February this year with a Big Agnes SL Rapide and a Forclaz z fold mat underneath. Was lovely and warm. I can move about in the Nemo no problem and I hate mummy bags. It’s a cracking bag in my opinion.

I have the disco men's long in -9C and used it in the rockies on a trip we got snowed on with a good sleeping pad. I would say it's a little cold for late fall.  Or the one I have is a bit underfilled maybe. I also find it a bit tight but my shoulders are about 24" across so I'm pretty big. Sea to summit ascent II looks to be an upgrade warmth wise and has a better zipper for venting.

I recently bought a Nemo Disco 15. It has a spoon shape so you have more room at around your elbows and knees to move around. I’m a bigger guy too and I find it really comfortable. Not to mention it’s very warm! https://www.rei.com/product/228441/nemo-disco-15-endless-promise-down-sleeping-bag-mens?sku=2284410002&store=&CAWELAID=120217890017681398&CAGPSPN=pla&CAAGID=112506289411&CATCI=pla-2019860905162&cm_mmc=PLA_Google%7C21700000001700551_2284410002%7C2019860905162%7CNB%7C71700000066415410&gad_source=1&gbraid=0AAAAAD_DTlyDee2cKx4vATulTFnAiYoKN&gclid=CjwKCAiAjeW6BhBAEiwAdKltMruppy9cq2o6iIxf-V8romi0_jbl7448zYAT9Ngya53-2OTnT18sFhoCTBIQAvD_BwE&gclsrc=aw.ds

Go to REI, invest your money on a good Nemo brand sleeping bag. You’ll be thankful for many many years and if anything happens to it you can return exchange at REI for years. If you haven’t already sign up for a REI co op membership and get your % back on your purchase.

Bought a disco 15 and used it this weekend on my first trip in years. It was fantastic. I think a quilt will be a later purchase for me. I like the snug feel of a sleeping bag.

And I returned it for being to cold at 40 degrees. Funny how different individual reviews can be.

Honestly, the 15 was also not very warm. I bought the men’s and women’s version. I lived when it hit 25. But was angry to be cold below 30 (wearing puff and full base). Marmot Teton was much warmer. I couldn’t believe the loft difference, and it still had room to move.

I got the nemo sleeping bag and the zipper broke on the first time using it ....

My order of preference, without prying more info out of you would be: 1. Magma 2. Radiant 3. Nemo … anyone giving you numbers after the name of the bag is guessing because you never mentioned what temperature rating you need and what geography we are talking about. In terms of r-rating we would need to know what mattress pad you are shlepping too…