Soul™ Endless Promise® Synthetic Mummy Sleeping Bag C8

This selection brings together the verified details for sleeping bags equipment and use.

NEMO’s newest sleeping bag silhouette is now offered with aerospace-grade, recycled synthetic insulation for ultralight adventures in any climate. Inspired by the traditional tapered mummy bag, Soul has a sleek, streamlined shape that shaves excess material as well as weight wherever possible but still sneaks in plenty of comfort brings. A mono-polymer design, Soul also meets our Endless Promise® standard as well as can be fully recycled at the end of its life — just send it back to NEMO, as well as we’ll handle the rest.

Highlighting the clean design are strategically placed vertical plus horizontal baffles to optimize warmth plus comfort while preventing migration of the Zerofiber™ 800 synthetic insulation. Soul’s single, asymmetrical front zip integrates with our innovative Headwall™ internal draft guard to bring 360-degree protection. A plush, insulated collar, Headwall wraps around the back of the neck plus cozily overlaps itself in front to efficiently block cold air while creating a uniquely comfort-focused experience. Balancing the front zipper is a single Thermo Gill™ vent, enabling fine-tuned temperature control. With both internal plus external zippers, the Thermo Gill incrementally releases body heat without direct exposure to the cold, extending the usable temperature range of the bag. For additional instant ventilation (or simply to let your feet poke out), the footbox also includes a zippered opening.

Highlighting the clean design are strategically placed vertical along with horizontal baffles to optimize warmth along with comfort while preventing migration of the aerospace-grade, 100% recycled synthetic insulation. 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, along with we’ll handle the rest.

For a complete explanation of how to interpret these numbers, read our blog here. A unisex bag, Soul calls out both the Limit temperature rating as well as the Comfort temperature rating in its name. Per industry standards, the Limit rating (the first number referenced in the series) is considered the benchmark for men, while the Comfort rating (the second number referenced in the series) is considered most applicable to women.