Marmot Phase Sleeping Bag
Best ultralight sleeping bag for female backpackers seeking premium warmth.
This bag prioritizes ultralight efficiency without sacrificing the warmth usually lost in standard designs. By mapping insulation specifically for women and locking it in place with curved baffles, it eliminates cold spots entirely. You sacrifice a bit of extra wiggle room, but you gain a reliable, featherweight shelter for serious backcountry nights.
$834.98
More Phase options
Who it's for
- Ounce-counting backpackers seeking maximum warmth with minimal pack weight
- Female campers who tend to sleep cold during shoulder-season trips
- Technical gear enthusiasts who value high-performance materials and packability
Who should skip it
- Budget-conscious hikers looking for a more affordable sleeping solution
- Side sleepers or restless campers who prefer a roomier interior
- Rough-and-tumble adventurers who prioritize extreme durability over weight savings
Performance breakdown
Warmth-to-Weight Ratio
High-loft 850 fill power down delivers incredible heat without the bulk.
Packability
Compresses down to a minimal 6.45 liters for effortless backpack storage.
Moisture Resistance
Treated down and water-resistant shell handle damp conditions with reliable confidence.
Ergonomic Comfort
Anatomical footbox and women-specific tailoring create a truly customized sleeping experience.
Thermal Efficiency
Specialized baffle construction and hood design effectively lock in critical body heat.
Hardware Reliability
Anti-snag YKK zippers provide smooth, frustration-free entry and exit every time.
Key Specs
Main materials
Pertex 10d 100% Nylon Ripstop .88oz/yd
Temperature Rating
20°F
Insulation
850+ Fill Power Goose Down
Lining
Pertex 10d 100% Nylon Ripstop .88oz/yd
Pack volume
6.45 liters
Weight
1.81 lbs
Zipper position
Left
Water Resistant
Yes
Has Draft Collar
Yes
Has Stash Pocket
Yes
Know before you buy
Still have a question?
Ask Metto anything about the Marmot Phase Sleeping Bag before you decide.
