Rab Ascent Sleeping Bag
Best versatile down insulation for regular mountain campers and backpackers.
This is a serious cold-weather workhorse that prioritizes thermal efficiency without feeling restrictive. The wider mummy cut gives you the room to actually move or layer up, trading a bit of packability for a much more comfortable night’s sleep when the temperature drops.
$300.00
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Who it's for
- Backpackers seeking a long-lasting investment for frequent mountain trips
- Hikers prioritizing thermal efficiency without excessive pack weight
- Side sleepers and campers who find traditional mummy bags restrictive
Who should skip it
- Ultralight purists focused on minimizing every ounce of pack weight
- Fast-and-light travelers with limited internal pack capacity
- Campers frequently facing extremely wet or humid environments without shelter
Performance breakdown
Thermal Efficiency
Duck down insulation and trapezoidal baffles create a reliable heat trap.
Weight-to-Warmth Ratio
Solid performance for cold-weather trips without excessive bulk or weight.
Interior Comfort
Wide mummy cut provides welcome room for movement and layering.
Weather Resistance
Pertex Quantum shell effectively blocks wind and light moisture.
Footbox Ergonomics
Angled design allows natural foot position for better sleep quality.
Draft Management
Three-dimensional neck collar seals out cold air with impressive precision.
Key Specs
Temperature Rating
15°F
Weight
2.84 lbs
Shape
Mummy
Insulation Type
Down
Fill Power
650 cubic inches per ounce
Shell Material
Pertex Quantum
Lining Material
Nylon
Zipper Location
Left
Water Resistant
Yes
Season Rating
3-Season
Know before you buy
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Ask Metto anything about the Rab Ascent Sleeping Bag before you decide.