Chris Townsend tests the Rab Neutrino Pro 700 and finds it to be an excellent winter-ready bag for cold overnights.
The Rab Neutrino Pro 700 is a lightweight sleeping bag suitable for UK winter use that provides excellent warmth for the weight. It’s a tapered mummy in shape, roomy around the shoulders, narrowing significantly round the legs, and then expanding again at the foot.
Chris Townsend highly recommends
I found the bag very comfortable on the many nights I used it over the last winter and spring in temperatures ranging from 3°C to -9°C and all the features work really well.- warmth for weight
- recylced fabrics
- confusing temperature ratings
| Quick Specs |
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| Price: $358.45 | £550 (available from Cotswold Outdoor) Weight: 1130g (Reg) Fill: 700g 800 fill power RDS certified goose down with Nikwax Fluorocarbon-Free, Hydrophobic Finish Shell: 20D Pertex Quantum Pro recycled nylon ripstop with microporous water-resistant coating and non-PFC-DWR outer, 20D recycled nylon inner Construction: trapezoidal boxwall with differential cut Zip: YKK ¾ length with synthetic filled baffle Length: 215cm (Regular), 230cm (Long) Rating: Comfort -4°C, Limit -10°C. Rab sleep limit -15°C Sizes: two Women’s version? No direct equivalent rab.equipment |
The baffles are chevron shaped which reduces the amount of fabric compared to standard horizontal baffles. Internally the trapezoid box wall construction and differential cut are designed to allow the down to loft fully. The down is 800 fill power and has a Nikwax hydrophobic treatment to resist moisture. This is aided by the Pertex Quantum Pro outer which has a thin water-resistant coating and a PFC-free DWR.
Rab gives the bag a ‘Sleep Limit’ of -15°C, a figure written prominently on the side of the bag and also on the zip baffle. Rab says this “indicates what we believe the sleeping bag’s most sensible useable limit to be”. However also on the zip baffle are the EN Comfort rating of -4°C and Comfort Limit of -10°C. This is confusing.
In use I found the bag warm at -9°C wearing just boxer shorts and a thin base layer top. I am a warm sleeper though. I think if you’re like me you will probably find Rab’s rating makes sense but if you’re a cold sleeper the EN rating is likely to be more accurate. I found the bag very comfortable on the many nights I used it over the last winter and spring in temperatures ranging from 3°C to -9°C. In summer I think it would be far too warm.
The features work well. The zip doesn’t snag, the hood and neck baffle are easily adjusted, and the narrow fit didn’t prove restrictive (though it might if you’re heavily built). A roomy waterproof drybag is provided. It weighs 70g. By compressing the bag inside I can get the packed size down to 33 x 24cm, which is compact for a winter bag.
How we tested
Chris had this bag on extended test last winter, giving him the chance to sleep out in a wide range of conditions, right across Scotland. Weights quoted are from his own digital scales. This review was first published in the December 2025 issue of The Great Outdoors.
