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Ascent Sleeping Bag: -11F Down - Women's
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Deep-winter warmth and roomy comfort in the Ascent Sleeping Bag
What Our Gearhead® Experts Are Saying:
"I recommend the Ascent for cold sleepers or trips where temps can really drop. The wide mummy cut gives you room to move without cold spots, and the sidewall baffles keep loft consistent all night. It’s warm, dependable, and feels built for real winter use rather than shaving grams."
We rely on the Ascent Sleeping Bag when winter trips push into truly cold territory. Designed for backpacking and mountain nights where warmth is non-negotiable, it balances serious insulation with a comfortable, livable shape that makes long nights more restful.
Built with L.O.F.T™ baffle technology and sidewall construction, the Ascent maximizes down loft while minimizing migration, helping maintain warmth through repeated use. The wide mummy profile, anatomically shaped footbox, and 3D neck collar improve sleeping comfort, especially for side sleepers. A 650FP hydrophobic European duck down fill, Pertex® Quantum shell, and thoughtful details like an arm access vent and anti-snag zips round out a sleeping bag designed for reliable cold-weather protection.
Details
- Built for cold-weather backpacking and winter mountain trips
- Wide mummy shape improves comfort without sacrificing warmth
- L.O.F.T™ baffles reduce down migration and improve packability
- Sidewall baffles increase loft and side sleeping comfort
- 650FP hydrophobic European duck down retains warmth in damp conditions
- Pertex® Quantum shell balances durability and lightweight feel
- Anatomical hood, neck collar, and footbox enhance heat retention
- Item #RABZ11J
- Responsible Collection
- Recycled/Repurposed, Responsibly Sourced
- Material
- [face fabric] 20D Pertex Quantum (100% nylon ripstop, PFC-free DWR finish), [lining] 20D 100% recycled nylon
- Insulation
- 650-fill RDS-certified down, Grangers PFC-free hydrophobic finish
- Shape
- wide mummy
- Zipper
- 3/4-length
- Bag Length
- regular, long
- Draft Tube
- full-length
- Pockets
- 1 zippered internal
- Venting
- zippered side
- Fill Weight
- 38.1oz (1080g)
- Degree
- -11F
- Storage Sack
- included
- Stuff Sack
- drawcord adjustable
- Claimed Weight
- 4lb 2oz
- Activity
- backpacking, winter camping, mountaineering
- Manufacturer Warranty
- limited lifetime
We Are The Mountain People
Rab makes rugged, high-performance clothing and equipment that give you absolute protection, comfort, and freedom in the mountains.