Sonic™ Down Mummy Sleeping Bag

$579.95

Spec sheet Checked by IndieOut

Maker: NEMO Equipment
Made in: Dover, NH
Type: Sleeping Bags
Availability: In stock at maker
Added: Mar 25, 2026
Last verified: Mar 25, 2026
Fulfilled by: NEMO Equipment — direct

Made in Dover, NH by an indie outdoor gear maker. Innovative tents, sleeping bags, and camp furniture.

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Meet the maker

NEMO Equipment

Dover, NH · Outdoor Gear

Innovative tents, sleeping bags, and camp furniture. Founded in New Hampshire in 2002 to bring new technology to outdoor gear.

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Details

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 tuneability with a reduced environmental impact. This bag features our 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 migra...