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

Nemo Sonic 0 Sleeping Bag

Nemo Sonic 0 Sleeping Bag is rated 4.8 out of 5 by 14.
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4.7 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 Volume: 11 liter / 671.3 cubic inches
Stuff/Compression Sack Dimensions: 18 x 11 in.
Features: Water-resistant, Stuff Sack Included
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 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
Rated 5 out of 5 by from Rocked the Kilimanjaro Trek I begged, borrowed and was willing steal to get this bag before my trip to Kilimanjaro and it was worth it. I am 6ft tall and I highly recommend the Sonic long bag. This bag was incredible every step of the way up Kilimanjaro all the way up to base camp 16,000ft with temps from 15 to minus 8-10 degrees. I tend to run a bit warm in general, slept in my boxers and t-shirt for the entire trip with the vents open. Amazing bag, worth every penny. Roomy and easy to stretch out into several sleeping positions. I have had Camp 7 and Monte Bell bags before and this one smokes them all for comfort and warmth. Very lightweight. Stuff bag it comes with is could but it could even pack down smaller if needed. SOLID GEAR!
Date published: 2016-01-15
Rated 4 out of 5 by from Solid for price Solid bag for the price, highly compressible, just the right amount of roomy and pretty true to comfort. The billow zippers are a little delicate but otherwise it's an awesome bag.
Date published: 2016-01-05
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