Balance packability with roomy comfort. The men's NEMO Disco 15 Endless Promise Down sleeping bag's cut lets you shift positions throughout the night—and also shave weight so it packs up light.
Key Details
Fill
650-fill-power, hydrophobic, PFC-free duck down
Weight
Regular - Left Zip: 2 lbs. 11 oz.
Long - Left Zip: 2 lbs. 15 oz.
Compressed Volume
Regular - Left Zip: 6.4 liters
Long - Left Zip: 7.6 liters
Temperature Rating (F)
15 degrees (F)
Features
Features a Classic Spoon® silhouette for ultimate side-sleeping comfort; spoon bags are cut generously at the elbows and knees so you can shift positions
Updated Thermo Gill™ vents extend the comfort range and create fine-tuned control with their multistage zipper system
Each Gill has an interior and exterior zipper with a draft-blocking intermediate layer
Updated Blanket Fold™ design offers a cozy, oversized draft collar that dramatically blocks cold air or releases excess warmth
Tucked in, the Blanket Fold defiantly blocks any chill while mimicking the comfort of your bed at home; pushed out, it helps dump excess heat instantly
Filled with premium 650-fill-power, hydrophobic, PFAS-free, RDS-certified down
Products certified to the Responsible Down Standard (RDS) contain down or feathers from farms certified to animal welfare requirements
Hood and footbox are reinforced with recyclable material treated with PFAS-free waterproofing to prevent tent condensation from soaking into the bag's fabric
Body-mapped design includes 3D footbox for tailored comfort and warmth
Zip 2 Disco sleeping bags with opposing zipper sides together to create a double sleeping bag
Anti-snag zipper features protective edging to stop fabric from getting caught in the zipper pull
NEMO takes full responsibility for all Endless Promise® products, from production to end of life, and designs them for 100% recyclability to keep out of the landfill
With a shell manufactured fully from PET, this sleeping bag is 100% recyclable at the end of its life—just send it back to NEMO, and they'll handle the rest
Imported.
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
100% recycled polyester ripstop with C0 durable water repellent (DWR)
Zipper Location
Left
Insulation Type
Down
Water-Resistant Down
Yes
Fill
650-fill-power, hydrophobic, PFC-free duck down
Fill Weight
Regular - Left Zip: 1 lb. 7 oz.
Long - Left Zip: 1 lb. 9 oz.
Sleeping Capacity
1-person
Lining
100% recycled polyester ripstop with C0 DWR
Sleeping Bag Shape
Semirectangular
Fits Up To (in.)
Regular - Left Zip: 72 inches
Long - Left Zip: 78 inches
Shoulder Girth (in.)
Regular - Left Zip: 62 inches
Long - Left Zip: 64 inches
Hip Girth (in.)
Regular - Left Zip: 57 inches
Long - Left Zip: 58 inches
Stuff Sack Size
Regular - Left Zip: 8.5 x 11.5 inches
Long - Left Zip: 8.5 x 12 inches
Stuff Sack Volume
14.9 liters
Compressed Volume
Regular - Left Zip: 6.4 liters
Long - Left Zip: 7.6 liters
Gender
Men's
Sustainability
Contains recycled materials
Down certified to the Responsible Down Standard (RDS)
Buying Advice
How to Choose Sleeping Bags for Backpacking
Do I really need a backpacking-specific bag?
Yes. These sleeping bags are lighter, pack down smaller and are more efficient at keeping you warm compared to ones for camping.
Understand sleeping-bag weight
Insulation type and bag shape affect weight the most. Always consider bags of a similar temperature rating when comparing loads.
Choose the right fit Many sleeping bags come in regular, long and short sizes. Review the bag's size specs for the best fit.
Consider other features Draft-blocking details, a snug-fitting hood, extra zippers and even a stash pocket can add more durability, warmth and function.
40 out of 47 (85%) reviewers recommend this product
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Average Customer Ratings
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Most Helpful Favorable Review
5 Reviews 5 reviews with an average rating of 5.0 out of 5 stars
Durable Conveniences Outweigh My Ultralight Bags
Terry M
1 year ago
Received free product
I probably spend more time optimizing sleeping gear than other backpacking items, and while I have always leaned toward lightweight, summer-oriented down sleeping bags, the comfort and thoughtful features of the Nemo Disco 15 Endless Promise changed my entire load-out formula. While my Disco 15 weighs more than my other bags (mine is 1,290 grams/2.837 lbs. packed inside the included stuff/compression sack), after I leave behind my temperature-rated sleeping bag liners and rely on the Disco 15's integrated pockets, the mass aligns closer to my other sleep gear--with far better features.
The two-way, 3/4-length side zipper is large and fumble-free, so I don't wake others as much in the middle of the night. It's more durable than the zippers on my slightly lighter (and far more expensive!) sleeping bags that rely on small, often one-way side zippers for weight savings. Over time these small and ultralight zippers usually end up jamming with trail dust and tent grit, or worse--the nylon zipper chain eventually bends at a crease and tiny zipper pulls won't pass over it. I feel confident about the Disco 15's zipper durability and lifespan.
I like the headroom and waterproof material at both ends of the bag--places most likely to brush tent wall condensation. I'm a smidgen under 6'1" and the regular size perfectly fit my side-sleeper habits. There's a roomy pillow pocket that accommodates the largest backpacking pillows I have, but to save pack weight I will likely stuff my midweight fleece tops into this pocket.
The breathable zippered mesh vents ("Thermal Gills") atop the bag allow ventilation, even when I pair it with an ultralight sleeping bag liner. I found that these vents also enhance my sleeping flexibility, so I have elbow room to roll to a side-sleeping position far more easily than wide side-sleeping bags without this feature. With the vents open and paired with the Nemo Tensor insulated sleeping pad in regular/wide size, I didn't overheat on an upper-30F early spring evening in the Cascade foothills.
The interior of one of the Thermal Gills doubles as a storage pocket for battery-powered items or small essentials (like a tiny headlamp for getting up in the middle of the night). It's a warm pocket for gear that might lose battery power on a cold night. About elbow-high in the lining folds is a tiny zipper pull that's almost easier to locate by touch than sight, which makes sense when you're fumbling around in the dark. My only issue with this design is that the pocket is small enough for a lightweight, short-range headlamp OR a compact battery pack, OR the smallest models of satellite communicators, but probably not all three at the same time. I like to read offline or play games on my iPhone Plus at night, and the phone alone won't fit in this pocket.
The exterior fabric on the Disco 15 is far more durable than my lightweight bags, and the Disco 15 fabric also beads water droplets from tent condensation and errant raindrops far better than any down sleeping bag I own. I didn't worry about moisture seeping into the fabric and compromising down insulation performance--or adding to my pack weight on my return hike.
The zippered storage sack on Nemo's Disco 15 is square and securely fits in my closet space better than the traditional, rounded drawstring sleeping bag storage bags. Durable compression straps make the Disco 15 easy to fit inside backpack sleeping bag compartments, but the dimensions are significantly taller and wider than a 32-oz Nalgene bottle. The bag's proportions are better compared to bestselling bear cans, where the Disco 15 remains narrower but taller.
Considering the comforts and hassle-free conveniences, the minor trade-off in ounces and volume is ideal insurance in unpredictable transition-season temperatures. This is my new favorite sleeping bag for extending my backpacking season earlier into spring and later into fall.
5 Reviews 5 reviews with an average rating of 2.0 out of 5 stars
could be better, not the Nemo standard we know of
awesometrail465
1 year ago
Received free product
Fairly disappointed with the 600FP down. The down seems to be very sparsely filled around the core area of the sleeping bag. No matter how long you let it loft, if you hold it up against some light, you'll notice a ton of gaps in the down. With that said, I used this bag at the mentioned ISO comfort rating at 28F for a mens version. Keep me warm all night.
Keep in mind I was wearing a base and a fleece mid layer. Not sure how it would perform with only base layers. Nemo also seemed to have removed the exterior zipper pocket, which used to be very handy to store my phone in on cold nights.
Not sure if I got a faulty piece, I would rather spend the extra $80 or so and get the 800FP Riff versions.
I have affectionately named this bag the Mustard Sack based on the color. This is an excellent bag and overall a well thought out design. The hood and draft collar provide a lot of extra warmth and make the bag feel more like a blanket. The vents provide some customization and ability to thermoregulate, however, the zippers are thin and somewhat difficult to grasp. This is especially true for the internal zippers when you are in the bag. The zipper pulls can be a nuisance if you are sleeping without a top or if the top is very thin. I really like how easy it is to side sleep in this bag compared to traditional mummy bags. The footbox and hood are a different material for waterproofing which is a great idea as they are the most likely to touch the tent walls. I am a cold sleeper and the 15 degree rating would not be comfortable at that temperature. I would estimate this bag to be good for about 30 degrees with cold sleepers. The compression sack included with the bag is excellent and having two of the straps that are clips makes getting the top on very easy.
Age:35–44
Weight:175–200 lbs.
Height:5'10"
Yes , I recommend this product
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Helpful?
Terry M
Received free product
Seattle, WA
Rated 5.0 out of 5 stars
Durable Conveniences Outweigh My Ultralight Bags
1 year ago
I probably spend more time optimizing sleeping gear than other backpacking items, and while I have always leaned toward lightweight, summer-oriented down sleeping bags, the comfort and thoughtful features of the Nemo Disco 15 Endless Promise changed my entire load-out formula. While my Disco 15 weighs more than my other bags (mine is 1,290 grams/2.837 lbs. packed inside the included stuff/compression sack), after I leave behind my temperature-rated sleeping bag liners and rely on the Disco 15's integrated pockets, the mass aligns closer to my other sleep gear--with far better features.
The two-way, 3/4-length side zipper is large and fumble-free, so I don't wake others as much in the middle of the night. It's more durable than the zippers on my slightly lighter (and far more expensive!) sleeping bags that rely on small, often one-way side zippers for weight savings. Over time these small and ultralight zippers usually end up jamming with trail dust and tent grit, or worse--the nylon zipper chain eventually bends at a crease and tiny zipper pulls won't pass over it. I feel confident about the Disco 15's zipper durability and lifespan.
I like the headroom and waterproof material at both ends of the bag--places most likely to brush tent wall condensation. I'm a smidgen under 6'1" and the regular size perfectly fit my side-sleeper habits. There's a roomy pillow pocket that accommodates the largest backpacking pillows I have, but to save pack weight I will likely stuff my midweight fleece tops into this pocket.
The breathable zippered mesh vents ("Thermal Gills") atop the bag allow ventilation, even when I pair it with an ultralight sleeping bag liner. I found that these vents also enhance my sleeping flexibility, so I have elbow room to roll to a side-sleeping position far more easily than wide side-sleeping bags without this feature. With the vents open and paired with the Nemo Tensor insulated sleeping pad in regular/wide size, I didn't overheat on an upper-30F early spring evening in the Cascade foothills.
The interior of one of the Thermal Gills doubles as a storage pocket for battery-powered items or small essentials (like a tiny headlamp for getting up in the middle of the night). It's a warm pocket for gear that might lose battery power on a cold night. About elbow-high in the lining folds is a tiny zipper pull that's almost easier to locate by touch than sight, which makes sense when you're fumbling around in the dark. My only issue with this design is that the pocket is small enough for a lightweight, short-range headlamp OR a compact battery pack, OR the smallest models of satellite communicators, but probably not all three at the same time. I like to read offline or play games on my iPhone Plus at night, and the phone alone won't fit in this pocket.
The exterior fabric on the Disco 15 is far more durable than my lightweight bags, and the Disco 15 fabric also beads water droplets from tent condensation and errant raindrops far better than any down sleeping bag I own. I didn't worry about moisture seeping into the fabric and compromising down insulation performance--or adding to my pack weight on my return hike.
The zippered storage sack on Nemo's Disco 15 is square and securely fits in my closet space better than the traditional, rounded drawstring sleeping bag storage bags. Durable compression straps make the Disco 15 easy to fit inside backpack sleeping bag compartments, but the dimensions are significantly taller and wider than a 32-oz Nalgene bottle. The bag's proportions are better compared to bestselling bear cans, where the Disco 15 remains narrower but taller.
Considering the comforts and hassle-free conveniences, the minor trade-off in ounces and volume is ideal insurance in unpredictable transition-season temperatures. This is my new favorite sleeping bag for extending my backpacking season earlier into spring and later into fall.
Weight:175–200 lbs.
Height:6'1"
Yes , I recommend this product
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Helpful?
T BONE
Received free product
Summit County, Colorado
Rated 5.0 out of 5 stars
Comfy Bag
1 year ago
I slept in this bag in my room without my heater on. The reason is I live in the Heart of the Rocky Mountains, @9300 feet. It still gets in the Low teens at night. My camping season will not start for over a month from now as there is still a ton of snow on the ground. I am still Skiing. I was very comfortable in the bag and the vent zips worked great. I cannot wait to go backpacking with this bag.
Age:65–74
Weight:125–150 lbs.
Height:5'5"
Yes , I recommend this product
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Helpful?
RM55
Received free product
Waco, Texas
Rated 5.0 out of 5 stars
Confortable and Warm
1 year ago
I acquired my Nemo Disco 15 Endless Promise sleeping bag from REI in the regular size. I am 5 ft 9 in. 180 pounds. The size is a great fit for me with plenty of room. The medium spoon shape is great for when sleeping on my back want to turn on to my side or change sides. This is a vast improvement over the mummy shape for me. I store an inflatable pillow in the built-in pillow pocket which is a nice addition. I enjoy the hood and neck pillow as I like to cover my face and head when the temperature gets colder during the night. The foot box area is roomy as well. I slept in it in a tent when the temperature was in the mid-30s F., and I was comfortable when camping at Davis Mountain State Park recently. Wish I had it in Big Bend NP during February. I have not decided about the usefulness of the vents. I have left them unzipped so far. Seems durable and high quality. I highly recommend the Nemo Disco for backpacking or tent camping in cooler temperatures.
Age:65–74
Weight:175–200 lbs.
Height:5'9"
Yes , I recommend this product
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Helpful?
Steve G
Received free product
Oakland, California
Rated 5.0 out of 5 stars
Excellent bag
1 year ago
Excellent bag. Plenty of room for side sleepers without compromising warmth. I haven't used in below 40 degrees but the 15 degree rating seems on point. Compresses nicely but it didn't come with a stuff sack. Overall really impressed with this bag as I am with most Nemo gear
Age:45–54
Weight:175–200 lbs.
Height:5'11"
Yes , I recommend this product
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Helpful?
awesometrail465
North Carolina
Rated 2.0 out of 5 stars
could be better, not the Nemo standard we know of
1 year ago
Fairly disappointed with the 600FP down. The down seems to be very sparsely filled around the core area of the sleeping bag. No matter how long you let it loft, if you hold it up against some light, you'll notice a ton of gaps in the down. With that said, I used this bag at the mentioned ISO comfort rating at 28F for a mens version. Keep me warm all night.
Keep in mind I was wearing a base and a fleece mid layer. Not sure how it would perform with only base layers. Nemo also seemed to have removed the exterior zipper pocket, which used to be very handy to store my phone in on cold nights.
Not sure if I got a faulty piece, I would rather spend the extra $80 or so and get the 800FP Riff versions.
Age:25–34
Weight:150–175 lbs.
Height:5'8"
No, I do not recommend this product
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Helpful?
Colby
Arizona
Rated 5.0 out of 5 stars
Great Bag for the Price
1 year ago
This is one of my favorite all around bags. I have 5 of them. One for everyone in my family as we camp and backpack often. It is roomy and warm. I don’t snow camp and I don’t think it would handle 20’s very well but haven’t taken them down that far. Does well in the 40’s and you need to wear some layers in the 30’s. My kids love these bags and I no longer worry about them getting cold at night. That little flap is amazing to just lay on you face and keeps you warm. They pack down small and are fairly light.
Age:35–44
Yes , I recommend this product
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Helpful?
Chelsey
Butler, pa
Rated 5.0 out of 5 stars
Best sleeping bag
9 months ago
The sleeping bag kept me so warm, It was comfy and very roomie for leg wiggle room
Age:25–34
Weight:125–150 lbs.
Height:5'5"
Yes , I recommend this product
Ease of Use
Difficult to useVery easy to use
Product Weight
LightweightHeavy
Helpful?
Chico James
Rated 5.0 out of 5 stars
Review: Nemo Disco Sleeping Bag
4 months ago
The Nemo Disco Sleeping Bag impresses right out of the box with its high-quality materials and thoughtful design. Nemo’s commitment to quality and sustainability is evident, which is always a plus. While I haven't had the chance to use it yet, I'm excited to take it out on my next trip.
One standout feature is the Thermo Gills, which should be perfect for temperature regulation, especially for those who run hot while sleeping. The pillow flap is another great touch, adding extra comfort. The length is just right, making it a well-designed bag overall.
Looking forward to putting it to the test, but so far, it looks like a fantastic choice. Thank you, Nemo!
Yes , I recommend this product
Originally posted on nemoequipment.com
Tom
Maryland
Rated 4.0 out of 5 stars
Great Warmth, Plenty Of Room
7 months ago
Just took the bag out for its first trip and I love it! Temps got down to 20, with occasional flurries. Wearing a merino base layer top and bottom and wool socks, on an REI Trailmade pad, I was nice and toasty.
I’m a side sleeper and there was plenty of room to move around. The only thing I haven’t made peace with (yet) is the baffle/flap - it seems a bit fiddly and kept flopping on my face when it wasn’t tucked in.
The thermals gills work as advertised. I started with them open and closed them up as the temps dropped, and there was a noticeable difference.