NEMO Sonic Down Mummy Sleeping Bag - Regular | Goodnight Gray/Torch

All-season warmth in a compact, eco-conscious design

The NEMO Sonic Down Mummy Sleeping Bag in Regular length fuses award-winning engineering with sustainable materials to deliver warmth that remains consistent as temperatures drop and nights grow damp. The Goodnight Gray/Torch colorway pairs a clean silhouette with thoughtful features designed for campers who value adaptability, comfort, and responsible gear.

Key to its performance is the combination of materials and construction. The shell and liner use 100% recycled fabrics that bluesign validates for responsible production. The down filling is premium 800 fill power hydrophobic and is PFC-free and RDS-certified, ensuring traceability and humane handling across the supply chain. With these choices, the bag aims to balance heat retention with a lightweight profile you can carry into backcountry campsites or car-accessible sites.

Ventilation, loft, and edge-to-edge warmth

Adaptive warmth presents itself through two core technologies. The Thermo Gill vents, updated with a multistage zipper, let you fine-tune airflow when you’re active during shoulder-season nights or when humidity climbs. Chevron baffle construction keeps down loft evenly distributed and minimizes migration when you move, helping you stay warmer where it counts.

• Thermo Gill vent system with multistage zipper for customizable ventilation.
• Chevron baffles provide uniform loft and reduce down migration during sleep.

Materials, sustainability, and care-free warmth

Designed with care for the planet, the shell and liner use bluesign-certified recycled fabrics. The 800FP hydrophobic down stands up to damp environments, while remaining incredibly lofty in dry conditions. The down is also packaged without PFCs and carries RDS certification, signaling responsible sourcing and traceability across the build.

• Bluesign-approved recycled fabrics for lower environmental impact.
• Hydrophobic 800 fill power down for reliable warmth and quick drying.

Real-world use and practical tips

Whether you’re trekking at altitude, camping near lakeshores, or outfitting a campsite for a weekend, this bag aims to deliver comfort across a broad temperature window. Regular length fits a wide range of body types. For best results, pair with a high-quality sleeping pad and a compression sack to optimize pack volume and loft after unpacking.

Remember, perceived warmth varies with conditions, activity, and personal preferences. The bag presents warmth possible outcomes rather than guaranteed results, inviting you to tailor your kit to your adventure.