NEMO Equipment's Sonic 0 Down Sleeping Bag is our top choice for everything from hut trips in Colorado and Utah to winter camping in Montana. It performs well when temps dip down to single digits, and it's designed with a venting system that's a rarity in its class. Thermo Gill vents along the torso open up if things get too warm in our tent or hut, but this sleeping bag doesn't let any cold seep in if we forget to close them before shutting our eyes for the night. NEMO also uses 800-fill, RDS-certified, hydrophobic down, which makes for a light and compressible and highly warmbag.
- Cold weather sleeping bag for winter excursions
- Lightweight and durable shell made from responsible recycled materials
- RDS-certified 800-fill down has a high warmth-to-weight ratio
- Thermo Gill vents dump heat for better temperature regulation
- Mummy shape optimizes warmth without adding weight
- Waterproof and breathable Toester footbox with synthetic insulation for warmth and moisture-management
Responsible Collection
Recycled/Repurposed, Bluesign Approved, Responsibly SourcedMaterial
100% recycled nylonInsulation
800-fill down (RDS-certified), PFAS-free hydrophobic treatment, [footbox] syntheticMax User Height
[short] 5ft 6in, [regular] 6ft, [long] 6ft 6inShoulder Circumference
[short] 61in, [regular] 63in, [long] 65inHip Circumference
[short] 56in, [regular] 58in, [long] 60inFoot Circumference
[short] 51in, [regular] 53in, [long] 55inBag Length
[short] 72in, [regular] 78in, [long] 84inDraft Tube
draft collar, draft tubesFill Weight
[short] 1lb 11oz, [regular] 1lb 12oz, [long] 1lb 13ozEuropean Norm/ISO Comfort Rating
14FEuropean Norm/ISO Lower Limit Rating
-1FStorage Sack
mesh storage back includedStuff Sack
compression sack includedStuff Size
[short] 13 x 9.5in (8.9L), [regular] 13 x 9.5in (9.6L), [long] 14 x 8.5in (9.9L)Claimed Weight
[short] 3lb 2oz, [regular] 3lb 4oz, [long] 3lb 9ozActivity
camping, winter campingManufacturer Warranty
limited lifetime
