Nemo Equipment

Sonic Down Sleeping Bag

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The 2015 Backpacker Editors' Choice Award Winning Sonic™ series of sleeping bags are built to put a smile on your face when the cold weather is keeping most people out of the mountains. We've used all the best ingredients of high-end fabrics and 850 fill power down insulation paired with stretch construction at the knees for side sleeping. Thermo Gills™ regulate the internal temperature of the bag by as much as 20° F without letting drafts in. 

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Product Details


NEMO’s award-winning sleeping bags establish their own equation for performance. Not just fast and light. But durable, comfortable, and a pleasure to use. Using innovative features, construction, and materials, NEMO sleeping bags complete a sleep system designed for seamless function, comfort, and ultimate performance.

  • Fill Type 850 Fill Power Down
  • Shape Mummy
  • Capacity 1P
  • Fits Up To Regular:  6'0" / 183 cm  Long:  6'6" / 198 cm
  • Shoulder Girth Regular:  61 in / 155 cm  Long: 
  • Hip Girth Regular:   58 in / 147 cm   Long: 63 in / 160 cm
  • Knee Girth Regular:  53 in / 135 cm  Long: 56 in / 142 cm
  • Zipper Location Left
  • Shell Fabric 20D Nylon Ripstop w/ DWR
  • Footbox Fabric OSMO™ DT W/B with DWR
  • Lining Fabric 20D Nylon Mini Ripstop + DWR