Rab

Ascent Sleeping Bag: -11F Down

What Our Gearhead® Experts Are Saying:

"I used the Ascent on a sub-freezing high alpine trip and slept like a rock. The wide mummy cut gave me space to side sleep, and the footbox is super comfy. It packs down surprisingly well for how warm it is, and the arm zip is clutch for organizing gear in the tent without fully unzipping."

When temps plunge and the air turns crisp and dry, the Ascent -24C / -11F Sleeping Bag keeps us warm, comfortable, and ready to rest deep. Its wide mummy shape and sidewall baffle construction create a lofted, roomy feel, ideal for side sleepers and cold-weather trekkers who need space without sacrificing heat retention.

With 650-fill-power European duck down treated with a hydrophobic finish, the Ascent maintains insulation even in damp alpine conditions. The L.O.F.T™ baffle system minimizes down migration, while synthetic insulation in high-compression zones—like the neck collar and zip baffles—adds extra warmth and durability. From hut-to-hut tours to winter overnights, this bag blends expedition-level performance with thoughtful comfort.