Rab is a brand that commands great customer loyalty, and the Ascent 900 is a perfect example of its quality. Using efficient down insulation it offers an excellent lower comfort rating of -19 deg C (outperforming other similarly priced bags), and all at a decent weight of 1700g: very impressive when you consider the price tag. Comfort levels are excellent, thanks to a spacious build for body and feet, a sizeable and spongy neck-supporting baffle, and an engulfingly warm and cosy hood. The hefty temperature rating is proof that – vitally – the deceptively loose-fitting build of this compact bag hasn’t sacrificed any performance. A nice feature is the small inner storage pocket for a torch or phone; meanwhile the Pertex material offers a cool, smooth feel against the skin once you’re inside. The vast storage bag and compressible sack are both of a high quality (the latter uses a floating lid, which is then yanked tight on three sides), and sum up the feeling of quality that the Ascent 900 displays at every turn. There’s no waterproofing, but if you don’t expect to encounter much condensation and want a great-value, high-performance down bag, the Rab Ascent 900 is a superb choice.
Outer fabric Pertex Microlight 30D
Inner fabric Pertex Microlight 30D
Insulation 650 fill European duck down
Sizes one size
Compressed pack size 25x32cm
Lower comfort rating -19 deg C
The Rab Ascent 900 was the best-value down sleeping bag in our test.
Review by Dan Aspel
First published in Trail magazine March 2013