The Rab Ascent Down Sleeping Bag (-18°C) is a warm, wide mummy bag built for cold-weather trekking and backpacking.
Filled with 650FP European duck down and wrapped in windproof Pertex® Quantum, it balances warmth, comfort and packability.
Hand-filled in the UK, it delivers reliable mountain performance when uninterrupted rest matters most.
Features
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650FP European duck down with fluorocarbon-free hydrophobic finish
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L.O.F.T™ baffle construction for maximum warmth-to-weight ratio
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Wide mummy fit allows extra layers in colder conditions
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Sidewall baffles reduce cold spots for side sleepers
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Windproof 20D Pertex® Quantum ripstop outer
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Recycled 20D nylon lining for next-to-skin comfort
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Two-way YKK® ¾ length main zip with synthetic-filled baffle
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Secondary short zip with snap closure for arm use while retaining heat
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Synthetic insulated neck collar seals in warmth
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Anatomically shaped foot box for relaxed sleeping position
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Internal zipped stash pocket for valuables
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Anti-snag zip guard and insert
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Internal cordlocks positioned for side sleeping comfort
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Supplied with drawcord stuff sack and zipped storage sack
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Hand-filled in Derbyshire, UK
Product Ascent Down Sleeping Bag (-18°C)
Product Code QSN-05
Shape Wide Mummy
Weight 1650 g / 3 lb 10.2 oz
Packed Size 26 cm x 45 cm (10.2 in x 17.7 in)
Insulation 650FP European duck down with fluorocarbon-free hydrophobic finish
Main Fabric 20D Pertex® Quantum nylon ripstop (38 g/m²) with fluorocarbon-free DWR
Lining Recycled 20D nylon (38 g/m²)
Temperature Rating (ISO 23537-2:2022) Comfort: -10°C (14°F); Limit: -18°C (0°F); Extreme: -40°C (-40°F)
Limit of Comfort -18°C / 0°F
Manufacturing Hand-filled in Derbyshire, UK; Manufactured in China
PFAS No
We offer free delivery on all orders over €75, and €5.95 for all orders under €75.
-We aim to ship all orders placed before 1:00pm on the same business day and have it delivered next-day, but in busy periods this can take longer, so allow for up to 3 working days for fulfillment.
We accept returns within 31 days of receiving the item, either in-store or by post.
- All items returned must be suitable to be sold again as new. For our full returns policy - click here.
- In-store returns are Free of charge, and returns posted with An Post via our returns page are €5 from a post office, or €6 collected from your home.
- All returns can be organised with An Post click & post, and will be fulfilled as soon as they arrive back at our store. Click here to start a return.