

Rab Ascent 900 Down Sleeping Bag (-18°C, 1.53 Kg)
The Ascent 900 is a very warm bag with a comfortable, wide mummy fit. Filled with 900g of 650FP duck down and with space for wearing additional layers if needed, this bag can be used in cold temperatures. Ideal for four season use, in winter conditions similar to those in the UK, New Zealand or Scandinavia.
Features and Specs
- Rab Sleep Limit: -18°C (0°F)
- Trapezoidal boxwall construction, 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 Anti-snag zip insert and anti snag internal zip guard
- YKK zipped internal stash pocket
- Angled foot box for relaxed sleeping posture
- Left and right hand bags can zip together
- Drawcord stuffsack included
- Zipped cotton sack with water-resistant base for home storage
- Wide Mummy Shape - with proportionally designed differential cut
Fabric | 30D Recycled Pertex® Quantum (50gsm) with fluorocarbon-free DWR, Lining: 20D Recycled Nylon (38gsm), Outer: 100% recycled polyamide. Lining: 100% recycled polyamide, Outer: 100% recycled polyamide. Lining: 100% recycled polyamide. |
Rab Sleep Limit | -18°C |
Durable Water Repellent (DWR) | Yes |
Windproof | Yes |
Stuff Sack | Yes |
Storage Sack | Yes |
Shape | Mummy |
Zip Side | Left |
Sleeping Bag Length | 215cm / 84.6 in |
Max User Height | 185cm / 72.8 in |
Internal Shoulder Girth | 160cm / 63.0 in |
Internal Hip Girth | 134cm / 52.8 in |
Internal Foot Girth | 108cm / 42.5 in |
Pack Size | 45cm x 24cm |
Zipper | 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 |
Insulation | 650FP European Duck Down with Nikwax Fluorocarbon-Free Hydrophobic Finish |
Down Fill Weight | 900 grams |
Water-Resistant Down | Yes |
Pockets | YKK® zipped internal stash pocket |
Fit | Regular |
Weight | 1530 grams |
Country of origin | UK |
Sustainability | Contains recycled materials |
Gender | Unisex |
Recommended use


