NEMO Sonic Sleeping Bag

Chevron baffle construction better compartmentalizes down, eliminating migration and keeping the down evenly lofted

Shell and liner fabrics are 100% recycled to the Global Recycled Standard (GRS) and are bluesign® approved

Premium 800-fill-power hydrophobic down is 100% Responsible Down Standard (RDS) certified and PFC-free

Redesigned draft collar and draft tubes keep cold air out

Offset main zipper creates a thermally efficient seal while an updated profile secures warmth closer to the body

Updated Thermo Gills™ extend the comfort range for milder nights with a multi-stage zipper system that lets heat out without letting cold drafts in

Stretch construction at the knees adds comfort for side sleeping

Redesigned Toester™ waterproof/breathable footbox utilizes a layer of synthetic insulation to protect the down and deliver maximum toastiness for toes

Toester footbox also provides a waterproof barrier against tent wall condensation; you can even dry damp clothes inside the footbox

Protected by the NEMO Lifetime Warranty
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.
Technical Specs
Best Use
Mountaineering
Tested Lower Limit
0 degrees (F) – ISO
Tested Comfort
14 degrees (F) – ISO
Temperature Rating (F)
0 degrees (F)
Temperature Rating (C)
-18 degrees (C)
Weight
Small – Left Zip: 3 lbs. 2 oz.

Regular – Left Zip: 3 lbs. 4 oz.

Long – Left Zip: 3 lbs. 9 oz.
Shell
Recycled nylon
Zipper Location
Left
Insulation Type
Down
Water-Resistant Down
Yes
Fill
800-fill-power down
Fill Weight
Small – Left Zip: 1 lb. 11 oz.

Regular – Left Zip: 1 lb. 12 oz.

Long – Left Zip: 1 lb. 13 oz.
Lining
Recycled polyester
Sleeping Bag Shape
Mummy
Fits Up To (in.)
Small – Left Zip: 66 inches

Regular – Left Zip: 72 inches

Long – Left Zip: 78 inches
Shoulder Girth (in.)
Small – Left Zip: 61 inches

Regular – Left Zip: 63 inches

Long – Left Zip: 65 inches
Hip Girth (in.)
Small – Left Zip: 56 inches

Regular – Left Zip: 58 inches

Long – Left Zip: 60 inches
Stuff Sack Size
Small – Left Zip: 9.5 x 13 inches

Regular – Left Zip: 9.5 x 13.5 inches

Long – Left Zip: 9.5 x 14 inches
Stuff Sack Volume
Small – Left Zip: 14.9 liters

Regular – Left Zip: 15.4 liters

Long – Left Zip: 16.3 liters
Compressed Volume
Small – Left Zip: 8.9 liters

Regular – Left Zip: 9.6 liters

Long – Left Zip: 9.9 liters
Gender
Unisex
Sustainability
Product meets the bluesign® criteria