NEMO Coda Endless Promise 25/35F Down Mummy Sleeping Bag

Inspired by traditional tapered mummy bags, the NEMO Coda Endless Promise 25/35°F Down mummy sleeping bag has a sleek, streamlined silhouette that shaves excess weight wherever possible.

Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.

• Efficient, tapered mummy design cuts excess weight for ultimate packability
• Streamlined Cohaesive™ hood cinch hardware is bonded to the material and more integrated into the bag's design than traditional dangling designs
• Single, asymmetrical front zipper integrates with the Headwall™ internal draft guard to provide 360° insulated, plush protection from the cold
• A plush, insulated collar, Headwall wraps around the back of the neck and overlaps itself in front to efficiently block cold air while creating a comfortable feel
• Updated Thermo Gill™ vent extends the comfort range and creates fine-tuned control with its multistage zipper system
• With internal and external zippers, the Thermo Gill incrementally releases body heat without direct exposure to the cold
• Filled with premium 800-fill-power hydrophobic, PFAS-free, RDS-certified down
• Products certified to the Responsible Down Standard (RDS) contain down or feathers from farms certified to animal welfare requirements
• Strategically placed vertical and horizontal baffles optimize warmth and comfort while preventing migration of the down
• This premium down is ideal for frigid conditions and packs down incredibly small, making it a versatile option for both ultralight backpacking and mountaineering trips
• Hood and footbox are reinforced with recyclable, waterproof material to prevent tent condensation from soaking into the bag's fabric
• Zippered opening at the foot of the bag allows direct access and instant ventilation
• NEMO takes full responsibility for all Endless Promise® products, from production to end of life, and designs them for 100% recyclability to keep them out of the landfill
• Manufactured from a single type of material, this sleeping bag is 100% recyclable when it can no longer be repaired or resold—just send it back to NEMO
• Protected by the NEMO Lifetime Warranty
• Per industry standards, the Limit rating is considered the benchmark for men, while the Comfort rating is considered most applicable to women