Ascent 500 Down Sleeping Bag (-5C)
A 650FP duck down sleeping bag with a recycled, wind resistant Pertex® Quantum outer. Designed with a comfortable wide shape, it's ideal for those buying their first down sleeping bag for use in spring conditions.
How it Performs
What It's Best For


Pertex® Quantum
A soft, lightweight, windproof fabric that encourages insulation to fully loft. Highly packable and protective, it's ideal for mountain activities.


Pertex® Quantum
A soft, lightweight, windproof fabric that encourages insulation to fully loft. Highly packable and protective, it's ideal for mountain activities.




Fill Power - 650
Fill power is all about down quality, not quantity. Find out more about what fill power means for you when you're out in the mountains in cold conditions.




Fill Power - 650
Fill power is all about down quality, not quantity. Find out more about what fill power means for you when you're out in the mountains in cold conditions.




Rab Sleep Limit Explained
Need help choosing the right bag for your next adventure? This is our real-world assessment of a sleeping bag's usable temperature limit. Find out how we arrive at this rating and how you can use it to select your bag.




Rab Sleep Limit Explained
Need help choosing the right bag for your next adventure? This is our real-world assessment of a sleeping bag's usable temperature limit. Find out how we arrive at this rating and how you can use it to select your bag.


Ascent Collection
The Ascent series is designed for wild campers, adventure backpackers, and draughty Scottish bothies. Combining clever construction to optimise warmth with a generous fit, it ensures a comfortable night’s sleep for the weary mountain explorer.


Ascent Collection
The Ascent series is designed for wild campers, adventure backpackers, and draughty Scottish bothies. Combining clever construction to optimise warmth with a generous fit, it ensures a comfortable night’s sleep for the weary mountain explorer.




RDS Certified Down
The Responsible Down Standard independently certifies down against animal welfare requirements and tracks it from the source to the final product.




RDS Certified Down
The Responsible Down Standard independently certifies down against animal welfare requirements and tracks it from the source to the final product.


Fluorocarbon-Free DWR
A durable water repellent coating made without harmful fluorocarbons, that encourages water to bead and roll off the garment, keeping you dry. Find out more about why we're cutting out fluorocarbons from our gear.


Fluorocarbon-Free DWR
A durable water repellent coating made without harmful fluorocarbons, that encourages water to bead and roll off the garment, keeping you dry. Find out more about why we're cutting out fluorocarbons from our gear.
Tell Me More
The Specifics
- Rab Sleep Limit:Rab Sleep Limit: -5°C (25°F)
- Weight:(Reg) 1060g/37.4oz, (XL) 1125g/39.7oz, (WZ) 1185g/41.8oz, (WR) 1125g/39.7oz
- EN (13537:2012) Temperature rating:ISO EN: Comfort: 1°C (34°F), Limit: -5°C (24°F), Extreme: -22°C (-8°F)
- Product Code:QSD-35
- 30D Recycled Pertex® Quantum (50gsm) with fluorocarbon-free DWR
- Lining: 20D Recycled Nylon (38gsm)
- 650FP RDS Certified European Duck Down with Nikwax fluorocarbon-free Hydrophobic Finish
- Trapezoidal boxwall construction with differential cut, to maximise loft and warmth
- 3-dimensional shaped neck collar to seal in warmth
- YKK 3/4 length main zip with down filled baffle to trap warmth
- YKK zipped internal stash pocket
- YKK Anti-snag zip insert and anti snag internal zip guard
- Angled foot box for relaxed sleeping posture
- Left and right hand bags can zip together
- Zipped cotton sack with water-resistant base for home storage
- Drawcord stuffsack included
- Outer: 100% recycled polyamide. Lining: 100% recycled polyamide.
- Fill: 650FP RDS certified European duck down with Nikwax hydrophobic fluorocarbon free finish
- Wide mummy shape
Sleeping Bag Size Guide

Wide Mummy | Regular | Long | Wide | Long Wide |
---|---|---|---|---|
Sleeping Bag Length | 215cm / 84.6 in | 230cm / 90.6 in | 215cm / 84.6 in | 230cm / 90.6 in |
Max User Height | 185cm / 72.8 in | 200cm / 78.7 in | 185cm / 72.8 in | 200cm / 78.7 in |
Internal Shoulder Girth | 160cm / 63.0 in | 162cm / 63.8 in | 180cm / 70.9 in | 182cm / 71.7 in |
Internal Hip Girth | 134cm / 52.8 in | 136cm / 53.5 in | 146cm / 57.5 in | 148cm / 58.3 in |
Internal Foot Girth | 108cm / 42.5 in | 110cm / 43.3 in | 116cm / 45.7 in | 118cm / 46.5 in |
Pack Size | 35cm x 20cm | 37cm x 24cm | 35cm x 20cm | 37cm x 24cm |