Ascent Down Sleeping Bag (-6°C)

Protective Versatile

£330.00

Rab Ascent Down Sleeping Bag (-6°C) - Tempest Blue/Maya Blue

Protective

Versatile

£330.00

Size and shape guide

Ascent Down Sleeping Bag (-6°C)

Shape: Wide Mummy

Size guide

Shape guide

Dimensions

Metric (cm)

Imperial (in)

Measurements	Regular	Long	Wide
Sleeping bag length	215cm	230cm	215cm
Max user height	185cm	200cm	185cm
Internal shoulder girth	170cm	172cm	190cm
Internal hip girth	140cm	142cm	150cm
Internal foot girth	108cm	110cm	116cm

Measurements	Regular	Long	Wide
Sleeping bag length	85 in	91 in	85 in
Max user height	73 in	79 in	73 in
Internal shoulder girth	67 in	68 in	75 in
Internal hip girth	55 in	56 in	59 in
Internal foot girth	43 in	43 in	46 in

Wide Mummy

A more generous cut for added comfort while you sleep, with space to move your legs. These sleeping bags are slightly bulkier and heavier than our mummy taper shape, but allow a more relaxed sleeping position.

Ascent Down Sleeping Bag (-6°C)

We will send you an email once the item is back in stock

I have read & accept the Privacy Policy

Ascent Down Sleeping Bag (-6°C)

£330.00

This unique guarantee promises to support you before, during and after your adventure, combining gear advice, aftercare services, and our Rab Warranty, to help you get more out of your gear.

For more information, please visit our Rab Promise page.

When comfort and uninterrupted rest are your highest priority, this versatile down sleeping bag offers dependable refuge for trekking and backpacking.

Protective. Versatile.

Activities:

Camping Trekking

Shape:

Wide Mummy

Size Guide

Weight:

1200g/2lb 10.33oz

Packed size:

20cm x 35cm (7.9in x 13.8in)

Material Facts

Ascent Down Sleeping Bag (-6°C)

	Recycled	PFAS PFAS This column shows where fluorocarbons (PFAS) may still be present in our products. No PFAS means we’ve phased out all intentionally added PFAS from the corresponding component and are compliant with current EU and US legislation.
Total content Total content The total percentage of an item's weight that is recycled.	40%	No
Fabric Fabric Some of our products use multiple fabrics, especially waterproof items. This figure shows the total percentage of an item's fabrics which are recycled, calculated by weight.	100%	No
Outer	100%	No
Second outer	100%	No
Liner	100%	No
Hydrophobic down	0%	No
Zips Zips This figure includes zipper tape, teeth, sliders, and pullers, showing their total recycled content by weight.	54%	No
Trims Trims This section shows the recycled content by weight for all components added to our products that are not captured in the other categories. For example, cord locks, pocket linings, buttons, cords, size labels, and eyelets.	34%	No
Renewable energy
Product manufacturing	42%
Manufactured in China
*Calculations based upon the weight of a regular length sleeping bag.
QSN-01 Version 09/2025

Material Facts is the way forward.

We’re helping you to make informed choices by giving you the raw data. Clear. Concise. Honest.

Learn More

Features

Weight1200g/2lb 10.33oz
Insulation650FP European duck down with Grangers fluorocarbon-free hydrophobic finish (480g / 16.9oz)
Main fabric20D Pertex® Quantum nylon ripstop (38g/m²) with fluorocarbon-free DWR
Fabric liningLining: Recycled 20D nylon, 38g/m²
ISO (23537-1:2022) temperature ratingComfort: 0°C (32°F), Limit of comfort: -6°C (21°F), Extreme: -24°C (-11°F)
Limit of Comfort-6°C / 21°F
Packed size20cm x 35cm (7.9in x 13.8in)
Product codeQSN-01

Looking for a sleeping bag that prioritises comfort and practicality? That will give you an easy night’s rest in the wild, without compromising on weight or pack size? This reliable down-filled bag offers the versatility you need for regular mountain use. Armed with 650FP duck down, a spacious wide mummy shape, windproof Pertex® Quantum fabric, and a clever baffle construction that maximises warmth for weight, it's perfect for trekking and backpacking adventures.

Hand-filled in the UK, all our down bags benefit from never having had their down compressed before use, preserving its loft and warmth.

L.O.F.T™ construction uses alternating wide and narrow baffles to achieve great warmth for weight.
Sleep comfortably on your side thanks to the sidewall baffles, which reduce cold spots and ensure you’re not lying on a seam.
A second shorter zip with integrated snap closure allows you to use your arms while retaining heat in your sleeping bag, ideal for cooking in the cold.
Cinch in the hood to seal in the heat, while the synthetic insulated collar sits snugly around your neck.
Sleep in a relaxed, comfortable position thanks to the roomy, anatomically shaped foot box.
Keep valuables and essentials close at hand with a zipped internal stash pocket.
Wide mummy fit gives space for extra layers when night temperatures plummet.
Internal cordlocks positioned below your collar bone for greater side sleeping comfort.
Two-way YKK® ¾ length main zip with synthetic-filled baffle.
YKK® anti-snag zip insert and anti-snag internal zip guard.
Drawcord stuff sack included.
Zipped storage sack with water-resistant base for home storage.
Hand-filled in Derbyshire UK.

Tech and features.

Hand-filled in the UK, all our down bags benefit from never having had their down compressed before use, preserving its loft and warmth.

Features

Weight1200g/2lb 10.33oz
Insulation650FP European duck down with Grangers fluorocarbon-free hydrophobic finish (480g / 16.9oz)
Main fabric20D Pertex® Quantum nylon ripstop (38g/m²) with fluorocarbon-free DWR
Fabric liningLining: Recycled 20D nylon, 38g/m²
ISO (23537-1:2022) temperature ratingComfort: 0°C (32°F), Limit of comfort: -6°C (21°F), Extreme: -24°C (-11°F)
Limit of Comfort-6°C / 21°F
Packed size20cm x 35cm (7.9in x 13.8in)
Product codeQSN-01

Hand-filled in the UK, all our down bags benefit from never having had their down compressed before use, preserving its loft and warmth.

L.O.F.T™ construction uses alternating wide and narrow baffles to achieve great warmth for weight.
Sleep comfortably on your side thanks to the sidewall baffles, which reduce cold spots and ensure you’re not lying on a seam.
A second shorter zip with integrated snap closure allows you to use your arms while retaining heat in your sleeping bag, ideal for cooking in the cold.
Cinch in the hood to seal in the heat, while the synthetic insulated collar sits snugly around your neck.
Sleep in a relaxed, comfortable position thanks to the roomy, anatomically shaped foot box.
Keep valuables and essentials close at hand with a zipped internal stash pocket.
Wide mummy fit gives space for extra layers when night temperatures plummet.
Internal cordlocks positioned below your collar bone for greater side sleeping comfort.
Two-way YKK® ¾ length main zip with synthetic-filled baffle.
YKK® anti-snag zip insert and anti-snag internal zip guard.
Drawcord stuff sack included.
Zipped storage sack with water-resistant base for home storage.
Hand-filled in Derbyshire UK.