Skip to main content

NEMO Sonic -20 Sleeping Bag - Used

MSRP: $659.95 - $699.95
$424.94 - $449.94

Mid Winter Masterpiece

When you’re spending days at altitude during the shortest days of the year, the NEMO Sonic -20 Degree Sleeping Bag comes into its own. Lightweight and packable, yet reliably warm well below freezing, this proven alpine bag is a mountaineer’s best friend. It’s stuffed with hydrophobic 800 fill power down, for an unbeatable warmth to weight ratio that won’t quit when conditions get tough. And since overheating can be just as much of a problem, it’s built with multi-stage Thermo Gills™, which let you evacuate excess heat without letting cold air sneak into your bag. Plus, it’s built with bluesignⓇ certified fabric certified throughout, so you can be confident that your new bag was built with consideration for keeping your favorite places cold for generations to come. 


  • Sustainablly produced winter weight sleeping bag that’s perfect for the mountains
  • Premium 800 FP down is ultra-packable, hydrophobic, PFC-free, and 100% Responsible Down Standard (RDS) Certified
  • bluesignⓇ certified fabric means minimal environmental impact during the production process
  • Thermo Gills™ allow you to vent body heat without letting cold drafts in
  • Tailored patterning is designed for optimal thermal efficiency and packability
  • Full-length YKK zipper with snagless baffle construction and draft tube seals warm air in
  • Protected by the NEMO Lifetime Warranty
  • Includes compression stuff sack


  • Capacity: 1 Person
  • Temp Rating: -20° F (-29° C)
  • Insulation: 800 FP Hydrophobic Down
  • Fits Up To: [Regular] 6’; [Long] 6’ 6”
  • Minimum Weight: 3 lbs 14 oz
  • Minimum Packed Size: 14.5” x 10.5” dia
  • Zipper Location: Left
  • Shell Fabric: 20D bluesignⓇ Nylon Ripstop w/ DWR
  • Footbox Fabric: 40D bluesignⓇ Nylon Ripstop w/ DWR
  • Lining Fabric: 20D bluesignⓇ 100% PCR Polyester w/ DWR

Type: Return

Condition:  4 of 5 - This item has been returned to our shop new condition but is missing the plastic zipper shield.