Mammut Relax Down Bag
Best ergonomic sleeping bag for side sleepers seeking maximum comfort.
Designed to mimic the comfort of your own bed, this sleeping bag prioritizes rest with a noise-reducing hood and an anatomical foot box. The central zipper layout makes temperature regulation intuitive, while the included sleep mask and earplugs ensure a peaceful night in the outdoors.
$264.95
at
OpticsPlanet
More Relax options
Who it's for
- Side sleepers who need extra room to move comfortably at night
- Light sleepers easily disturbed by the sound of moving fabric
- Campers seeking effortless access and quick ventilation during the night
Who should skip it
- Ultralight backpackers prioritizing minimal pack volume over sleeping comfort
- Thru-hikers counting every ounce for high-mileage mountain expeditions
- Winter explorers facing temperatures at the very edge of the rating
Performance breakdown
Sleep comfort
Noise-reducing hood and included accessories prioritize deep, uninterrupted rest.
Temperature regulation
Central zipper design allows for quick, intuitive venting during warmer nights.
Foot box ergonomics
Anatomical shaping provides ample room for natural, unrestricted foot movement.
Weather resistance
PFC-free treatment handles light moisture well but lacks full waterproof protection.
Sustainability
Recycled lining and eco-friendly water repellent show thoughtful environmental consideration.
Weight-to-warmth ratio
Synthetic insulation offers reliable warmth but adds bulk compared to down.
Key Specs
Temperature Rating
32 degrees Fahrenheit
Sleeping Bag Shape
Mummy
Insulation Type
Ajungilak fiber
Lining Material
Recycled polyester
Water Resistant
Yes
Zipper Location
Center
Has Draft Collar
Yes
Has Stash Pocket
Yes
Age Group
Adults
Number of Occupants
1
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