Rab has updated the Neutrino 800 since we last tested it. The new bag (shown above in the cover photo) has a new color scheme and slightly different baffle configuration, but the overall specs remain the same.
April 2022Rab Neutrino 800 Review
Our Verdict
Compare to Similar Products
![]() This Product
Rab Neutrino 800 | |||||
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Awards | ![]() | ![]() | ![]() | ||
Price | $565 List $423.75 at Backcountry | $600 List $590.00 at REI | $680 List $325.00 at Backcountry | $325 List Check Price at REI | $274.48 at Amazon Compare at 2 sellers |
Overall Score ![]() |
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Star Rating | |||||
Bottom Line | This bag offers decent warmth and weight for $100 less than the top performers | This lightweight sleeping bag comfortably cradles you with warm, lofty down | Excellent for moving in the mountains in cold weather, this model is lightweight, packs small, and stays true to its temperature rating | This budget bag offers protection from the elements via a large draft tube and plush draft collar | For those who expect to sit out a storm and play cards or want an inexpensive throw bag for car camping, this is an economical option |
Rating Categories | Rab Neutrino 800 | The North Face Infe... | Mountain Hardwear P... | Mountain Hardwear B... | Marmot Never Summer 0 |
Warmth (20%) | |||||
Weight (20%) | |||||
Comfort (20%) | |||||
Packed Size (15%) | |||||
Weather Resistance (15%) | |||||
Features (10%) | |||||
Specs | Rab Neutrino 800 | The North Face Infe... | Mountain Hardwear P... | Mountain Hardwear B... | Marmot Never Summer 0 |
Measured Weight (size Regular) | 2.85 lbs | 2.68 lbs | 2.68 lbs | 3.13 lbs | 3.19 lbs |
Fill Weight | 28.0 oz | 29 oz | 29.6 oz | 35.0 oz | 36.2 oz |
Type of Down Fill | European Goose Down | Down RDS Certified | Goose Down RDS Cert/Fluorine Free | Down | Down |
Fill Power | 800 | 800 | 850 | 650 | 650 |
Material Weight (excludes down filling) | 17.7 oz | 13.9 oz | 13.3 oz | 15.1 oz | 14.9 oz |
Temperature Rating | -4°F | 0°F | 0°F | 0°F | 0°F |
Yes | No | Yes | Yes | Yes | |
Shoulder Girth | 59" | 64" | 58" | 62" | 62" |
Hip Girth | 51" | 60" | 52" | 53" | 57" |
Foot Girth | 49" | 44" | Not listed | Not listed | 48.5" |
Shell Material | Pertex Quantum | 15D recycled nylon, 30D nylon taffeta | 10D Nylon Ghost ripstop, DWR finish | 20-Denier ripstop nylon | 20-Denier ripstop nylon |
Continuous Baffle | Yes | Not listed | No | Yes | Yes |
Our Analysis and Test Results
Performance Comparison
Warmth
Rab gives the Neutrino 800 a lower limit of -4F. While local temps didn't dip below zero during our testing period, we suspect we'd be pretty uncomfortable at that temperature, and would probably want an additional down puffy jacket and booties around 0.
Weight
The Rab Neutrino 800 weighs 45.65 oz or 2.85 lbs according to our scales, which happen to be the exact same weight as our Editors' Choice Award winner, the Western Mountaineering Kodiak MF. However, the Kodiak is warmer, uses higher quality down, and has a roomier cut, which makes it more comfortable. Because the Kodiak uses lighter materials and better down, it has a better warmth-to-weight ratio. The Neutrino has a good warmth-to-weight ratio just not as good as the top-performing bags. It's worth noting that the Neutrino costs significantly less than most of these bags.
Comfort
The Neutrino 800 feels much wider than its measurements suggests because it's less tapered than some of the other bags with similar measurements. The slight taper makes for plenty of room to roll around if you're a smaller person. Extra room in a sleeping bag will let you sleep in a variety of positions, but remember that extra room equates to uninsulated dead space, so when it's really cold you should fill that space with extra clothes and puffy jackets. The extra room makes this bag a less efficient insulator and not the top choice for ounce-counters who are trying to move fast in the backcountry. It does make this bag a better choice for base camping and long trips where you'll be spending a lot of time in your bag.
Packed Size
This bag is very compressible for its warmth. It comes with what's described as a “dry bag compression stuff sack,” but the sack doesn't have any actual compression straps. We packed it into the same compression sack that we used with the warmer bags, and the Neutrino packs away slightly smaller than these bags.
Weather Resistance
This bag features down that has a Nikwax hydrophobic treatment to help the down maintain some of its loft if it gets weight and speeds up the bag's drying time. We aren't ripping open these $500+ sleeping bags and looking at the down, so we're not sure how much weather resistance we can really attribute to the Nikwax treatment. What we can see is how well water beads up on the shell fabric and how long it takes to wet out, and the Pertex shell fabric does a fine job of repelling light mist and melting frost, but we don't recommend sleeping in this bag while exposed in a heavy rainstorm.
Features
We like the Neutrino's small zippered internal pocket that will keep your phone, headlamp, and a few camera batteries warm, dry, and easily accessible while you sleep. We don't like this bag's hood and collar cinch cords. They are elastic and are very long, so when we tightened the cords to snug the hood around our faces, it left long loops of slack that hang uncomfortably in the bag. The extra slack issue can probably be solved with some careful aftermarket modification. The zipper snags a lot more than the zippers found on the Western Mountaineering bags.
Value
For the money, this bag is a good deal. It's over 150 dollars less than creme de la creme of bags and is pretty versatile because of its low weight and full-length zipper.
Conclusion
This bag isn't quite the screaming deal as its heavier and less expensive cousin, the Rab Accent 900. It does provide a less expensive option, with good performance, just a notch below the top performers in this review. If you want to save a hundred bucks or more and you'll be facing temps in the teens on your adventures this winter, you can expect to sleep comfortably in the Neutrino 800. It's a great bag, but there are a few higher-end models that outperform it.