Nemo Sonic 0 Sleeping Bag
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Granite / Sunburst Yellow
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Granite / Sunburst Yellow

Nemo Sonic 0 Sleeping Bag

Nemo Sonic 0 Sleeping Bag is rated 4.8 out of 5 by 16.
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4.8 Star Rating
$499.95 - $529.95

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Product Description Item No.   10272237

The Nemo Sonic 0 Sleeping Bag is a zero degree sleeping bag for cold weather sleeps in the mountains. Fish aren't the only ones with gills these days, as this bag has Thermo Gills™, which helps regulate the internal temperature. Little warm? Open 'em up. Little cold, keep 'em closed. The 850 fill power down delivers the heat while compressing down for space saving in your pack.

FEATURES of the Nemo Sonic 0 Sleeping Bag

  • Winner of a 2015 Backpacker magazine Editors' Choice Award, Sonic has been praised for being the only bag you really need from 0° F to 40° F
  • Adjustable Thermo Gills allow you to control the internal temperature of the bag without letting in cold drafts, extending your comfort range by 20° F or more
  • Stretch construction at the knees helps maintain bag shape, thermal efficiency, andloft, while offering enhanced volume so you can sleep on your side or with your knees bent
  • Thermo gills allow you to regulate the warmth of the bag on milder nights by as much as 20° F/11° C without letting cold drafts inside
  • Stretch construction at the knees offers extra volume for side sleeping but keeps the bag close to your body for thermal efficiency
  • Oversized draft collar
  • Insotect flow vertical baffles
  • Temperature regulating thermo gills closed
  • Included Accessories: Cotton storage bag, drawstring stuff sack

- + Product Specifications
Stuff / Compression Sack Dimensions: 18 x 11 in.
Stuff / Compression Sack Volume: 11 liter / 671.3 cubic inches
Features: Stuff Sack Included, Water-resistant
Best Use: Winter Camping, Backpacking, Basecamp and Expedition, Mountaineering and Alpine
Sleeping Bag Shape: Mummy
Bag Weight (Regular): 2 lbs 11 oz
Bag Weight (Long): 2 lbs 15 oz
Zipper Side: Left
Sleeping Bag Shell: 20D Nylon Ripstop with DWR
Fill Weight (Regular): 1 lb 7.6 oz
Fill Weight (Long): 1 lb 9 oz
Max User Height (Long): 6 ft 6 in.
Foot Circumference (Regular): 53 in.
Foot Circumference (Long): 56 in.
Shoulder Circumference (Regular): 61 in.
Hip Circumference (Regular): 58 in.
Shoulder Circumference (Long): 69 in.
Hip Circumference (Long): 63 in.
Awards: Backpacker Magazine Editors' Choice Award - 2015
Product Technology: DWR
Gender: Mens
Insulation: Down
Sleep Capacity: 1
Temperature Rating: 0 - 10 Degrees Fahrenheit
Exact Temperature Rating: 0 Degrees Fahrenheit
Max User Height (Regular): 6 ft
Fill Details: 850 Fill Power Down
DWR tech

Durable Water Repellant
DWR (Durable Water Repellent) is a coating that is applied to fabrics which makes them water-resistant, or hydrophobic. A DWR finish doesn't interfere with breathability, which makes it perfect for adverse conditions in the backcountry.

Rated 5 out of 5 by from Very cute So the first night i spent in this bag the temp was close to -20C. and this bag did not fail. My toes were a tad cold, but that’s about it. And i later realized that i made a rookie mistake of going into the bag completely. As a result the vapors prevented the bag from doing its job a 100%. On subsequent nights when the temps continued to remain between -15C and -25C, i was pretty comfortable in the bag with a couple of layers on me. The point being : this bag is awesome! I expect it would work just as well on future summer camping trips to the lower himalayas, which is exactly why i picked this bag... ought to work for late winter as well as other seasons so i don’t need a second bag, just unzip those vents and voila! The ONLY kinda downside I noticed is the construction quality. the stitching was opening up at a couple of places. i will point it out later if it does become an issue. for now, i’m not worried about it.
Date published: 2018-02-20
Rated 5 out of 5 by from Looking forward to sleeping well Purchased for upcoming winter trips to Sierra and Rainier. It appears to be very well made and I am very intrigued by the gill venting, as I usually vacillate between being too warm or too cold. Have had a number of bags over the past 50 years and this hopefully will be the best!
Date published: 2018-02-07
Rated 4 out of 5 by from Lots of features. Vent zips etc. I bought the Nemo after ordering several bags trying them out at home and picking the best for me. Roomy and quiet. One night of being miserable on a mountain and I’d spend twice as much on a bag.
Date published: 2017-12-22
Rated 4 out of 5 by from Toasty Bag I bought this bag for 3 and 4 season backpacking. I used it over Thanksgiving weekend and it performed beyond expectations! I was toasty!!!
Date published: 2017-12-01
Rated 5 out of 5 by from Warm, comfortable, light. Ideal for side sleepers. Used for the first time on a section hike, the nights got down around 5-6 deg. Paired with a high R rating mat and a Nemo Fillo I was toasty and comfy as I normally sleep in the "can opener" position (one leg straight, other knee at 90deg bent). The stretch in the hip area enables knees up sleeping and the foot box kept my other foot warm. Gills work as advertised and enable the bag to vent heat easily. Had a few issues with zip snagging but otherwise bag performed perfectly. On warmer nights I rotated the bag 90deg anti-clockwise unzipped so that I could have my feet in the footbox and the rest of the open bag draped over me as a quilt. Perfect. I was closely considering a WM or Feathered Friend but the prices for a comparable temp bag challenged my budget and I was sold on the ability to use the Sonic 0 in warmer temps with the gills open. Don't believe reviews that deny the authenticity of the temp rating....I was in the bag at low single digit temps with only merino underwear and a merino t shirt, no socks. Any bag is part of a sleep system and I don't doubt my mat helped in ensuring a comfy experience. Great bag.
Date published: 2017-09-30
Rated 5 out of 5 by from Best all around winter bag I bought this for winter camping in the upper midwest (US) and I'm so glad that I did. It packs up small enough that you can bikepack with it. The materials and construction are top notch, including the 850 down fill. Be sure to pair it with an insulated pad. I use it with an OR Alpine Bivy and a Thermarest insulated pad, but Nemo seems to have good offerings for both of those, as well. I look forward to trying those out when its time for replacements.
Date published: 2017-09-02
Rated 5 out of 5 by from Good Bag I've had this bag for a few years. Used it first on Peru's Salkantay (18,000). No issues. Kilimanjaro in July '17 (16,000 base camp). No issues. I tend to run warm.
Date published: 2017-08-31
Rated 5 out of 5 by from Hands down the best piece of cold weather gear!! Had for about 18 months and have been warm well into the single digits. Was in Yosemite this weekend for an overnight low of 7 degrees and about a foot of snow where we were. Wasnt cold once in the night! I recommend this bag for anyone that is looking for a top notch cold weather bag.
Date published: 2017-04-11
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