A warm, adaptable sleeping bag with 800 fill-power down insulation, adjustable gills for breathability, and sustainable materials, rated for -40°F / -40°C
Sonic is built to be the only bag you need from -20°F to 40°F. The Backpacker Editors’ Choice award-winning big-mountain bag offers exceptional warmth and tunability 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
Details
Additional Specs
Seasons: | 4-Season |
Capacity: | 1-Person |
Shape: | Mummy |
Minimum Weight: | 62 oz (3 lb 14 oz) / 1.76 kg |
Packed Weight: | 15 oz (4 lb 1 oz) / 1.85 kg |
Length/User Height: | 6' / 1.83m |
Zipper: | Left |
Compressed Volume: | 762.8 in^3 (3.3 gal US) / 12.5L |
Insulation Type: | 800 Fill-Power Hydrophobic Down |
Fill Weight: | 37 oz (2 lb 5 oz) / 1.06 kg |
Total Loft: | 29,600 in^3 |
Temp. Rating (Comfort): | -20°F / -28.9°C |