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Nemo Sonic Down Mummy 0F / -18C Sleeping Bag

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  • Product Number: 6455

Sonic is built to be the only bag you need from 0°F to 40°F. The Backpacker Editors’ Choice award-winning big-mountain bag offers exceptional warmth and tuneability with a reduced environmental impact. This bag features Nemo's next-generation Thermo Gill™ vents, with a new multistage zipper system that dramatically increases the usable temperature range of the bag and allows fine-tuning of comfort from within. Sonic’s chevron baffle construction better compartmentalizes down, eliminating migration and keeping the down evenly lofted. (Not to mention, it looks awesome.)

The shell and liner fabrics are 100% recycled fabrics and bluesign® approved, and the premium 800 FP hydrophobic down is 100% Responsible Down Standard (RDS) certified. Years of history in the field yielded detailed upgrades on this bag, including a perfected profile, redesigned draft collar, and bolstered draft tubes. Nemo's proven Toester™ footbox keeps feet warmer, provides a waterproof barrier against tent wall condensation, and protects down from moisture while drying damp clothes inside the footbox. Adaptable to whatever the mountain throws at it, Sonic continues to reverberate as the ultimate extreme weather companion.

Features

  • Thermo Gillâ„¢ vents allow for temperature regulation in variable mountain climates without letting cold air in.
  • Premium materials such as a 20D nylon ripstop shell and a smooth 30D nylon taffeta on the interior increase durability and comfort.
  • Stretch construction at the knees allows side sleeping.
  • Stuffed with 800 FP hydrophobic down that is 100% RDS-certified. Products certified to the Responsible Down Standard (RDS) contain down or feathers from farms certified to animal welfare requirements.
  • Down-filled draft collar and draft tubes create a secure seal to keep cold air out.
  • Toester waterproof/breathable footbox relies on an additional layer of synthetic insulation to reduce cold spots.
  • Offset zipper creates a thermally efficient seal.
  • Contoured profile secures warmth closer to the body.
  • Protected by the NEMO Lifetime Warranty.

Fit Specifications

0°F / Short 0°F / Regular 0°F / Long -20°F / Regular -20°F / Long
Fits Up To 5'6" / 168 cm 6' / 183 cm 6'6" / 198 cm 6' / 183 cm 6'6" / 198 cm
Shoulder Girth 61 in / 155 cm 63 in / 160 cm 65 in / 165 cm 63 in / 160 cm 65 in / 165 cm
Hip Girth 56 in / 142 cm 58 in / 147 cm 60 in / 153 cm 58 in / 147 cm 60 in / 153 cm
Knee Girth 51 in / 130 cm 53 in / 135 cm 55 in / 140 cm 53 in / 135 cm 55 in / 140 cm
Zipper Location Left Left Left Left Left

Package Specifications

0°F / Short 0°F / Regular 0°F / Long -20°F / Regular -20°F / Long
Minimum Weight 3 lb , 2 oz / 1.42 kg 3 lb , 4 oz / 1.47 kg 3 lb , 9 oz / 1.62 kg 3 lb , 14 oz / 1.76 kg 4 lb , 3 oz / 1.9 kg
Packed Size 13.0 x 9.5 in dia / 33 x 24 cm dia 13.5 x 9.5 in dia / 34 x 24 cm dia 14.0 x 9.5 in dia / 36 x 24 cm dia 14.5 x 10.5 in dia / 37 x 27 cm dia 15.5 x 10.5 in dia / 39 x 27 cm dia
Compressed Volume 8.9 L 9.6 L 9.9 L 9.6 L 9.9 L

Ratings and Materials

0°F / Short 0°F / Regular 0°F / Long -20°F / Regular -20°F / Long
Temp Rating 0F / -18C 0F / -18C 0F / -18C -20F / -29C -20F / -29C
ISO Comfort 14F / -10C 14F / -10C 14F / -10C - -
Insulation Down Down Down Down Down
Fill Type 800 FP Down 800 FP Down 800 FP Down 800 FP Down 800 FP Down
Fill Weight 1 lb , 11 oz / 770 g 1 lb , 12 oz / 790 g 1 lb , 13 oz / 835 g 2 lb , 5 oz / 1.06 kg 2 lb , 8 oz / 1.12 kg
Shell Fabric 100% Recycled Nylon, Bluesign Certified 100% Recycled Nylon, Bluesign Certified 100% Recycled Nylon, Bluesign Certified 100% Recycled Nylon, Bluesign Certified 100% Recycled Nylon, Bluesign Certified
Footbox Fabric 100% Recycled Nylon, Bluesign Certified 100% Recycled Nylon, Bluesign Certified 100% Recycled Nylon, Bluesign Certified 100% Recycled Nylon, Bluesign Certified 100% Recycled Nylon, Bluesign Certified
Lining Fabric 100% Recycled Polyester, Bluesign Certified 100% Recycled Polyester, Bluesign Certified 100% Recycled Polyester, Bluesign Certified 100% Recycled Polyester, Bluesign Certified 100% Recycled Polyester, Bluesign Certified