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- Rab Neutrino 400 Ultralight Down Sleeping Bag
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/7f542c02-fb67-4145-95a4-7906ce83325f-Neutrino_400_NightfallBlue_QSM_90_NFB_01.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/0b1ffbff-3f24-47a4-95ea-678094eede3d-Neutrino_400_NightfallBlue_QSM_90_NFB_02.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/c349ae61-b905-4641-a43b-f911f1c27684-Neutrino_400_NightfallBlue_QSM_90_NFB_03.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/6b772d71-0f71-4ce6-a3cf-a1e03185591e-Neutrino_400_NightfallBlue_QSM_90_NFB_04.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/dfdf04cb-ec2b-409b-80b8-39f70d6918b6-Neutrino_400_NightfallBlue_QSM_90_NFB_05.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/d7cfe011-633d-4d72-9fde-6ab45f42912e-NEUTRINO_400_NIGHTFALL_BLUE_QSM_90_NFB_06.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/e178201c-4fc1-4812-9a2a-4474e0f53d67-NEUTRINO_400_NIGHTFALL_BLUE_QSM_90_NFB_09.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/4fcf6aaf-6b53-4c17-832e-6f1a0946b9d1-NEUTRINO_400_NIGHTFALL_BLUE_QSM_90_NFB_08.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/NEUTRINO_400_NIGHTFALL_BLUE_QSM_90_NFB_10.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/7037812b-87b1-4481-8604-07877db221bf-NEUTRINO_400_NIGHTFALL_BLUE_QSM_90_NFB_07.jpg)
![Rab Neutrino 400 Ultralight Down Sleeping Bag](https://absolute-snow-content.cdn.rlab.net/original/7f542c02-fb67-4145-95a4-7906ce83325f-Neutrino_400_NightfallBlue_QSM_90_NFB_01.jpg)
About the Rab Neutrino 400
With over 30 years of experience, Rab sleeping bags are built on tried and tested designs; crafted using the highest quality fabrics with an attention to detail that makes them a trusted name in outdoor equipment. Each Rab sleeping bag is designed, hand-filled, stitched and finished in Derbyshire UK.
The Neutrino 400 down sleeping bag delivers a compact and ultralight design with a host of technical features for climbers, and mountaineers looking to keep their gear carry to a minimum.
A lightweight and highly durable Pertex® Quantum shell fabric keeps the pack weight low while 400g of 800FP ethically sourced European goose down delivers highly compressible insulation for a travel-friendly pack size. Nikwax Hydrophobic Down treatment continues to insulate even when damp while maintaining loft 60 times longer than untreated down and drying 3 x faster - all without the use of PFCs. Down fill is held in trapezoidal box-wall chambers to maximise loft and warmth while eliminating cold spots.
The Neutrino series cuts out excess bulk thanks to a tapered mummy fit with an angled foot box to keep your feet warm but still allow for comfort and movement. A close-fitting adjustable neck baffle and drawcord hood provide a snug fit to seal in the warmth while a 3-quarter length YKK main zip provides ease of access backed by a full-length synthetic-filled baffle to exclude draughts. An internal pocket lets you keep a torch or other smaller items close at hand.
The Rab Neutrino 400 gives you a high-performance sleeping bag built for 3-season alpine climbing, trekking, and mountaineering trips. With a pack weight of just 775g (approx.) and a compressible pack size, this bag has been optimised for the fast-moving outdoor enthusiast wanting a compact sleeping bag with a balance of low weight and comfort.
- 800FP R.D.S Certified European Goose Down
- Weight-saving chevron baffle design on the upper torso, reduces down migration and optimises core warmth
- Trapezoidal box wall construction with differential cut, to maximise loft and warmth
- Close fitting adjustable neck baffle design for decreased heat loss
- YKK 3/4 length main zip with synthetic-filled baffle to trap warmth
- YKK internal zipped stash pocket
- Angled foot box
- YKK Anti-snag zip insert and anti-snag internal zip guard
- Rab® Fluorocarbon free Hydrophobic Down developed in conjunction with Nikwax®
- Mummy taper shape
- Internal zipped stash pocket
- Includes roll-top compression sack & cotton storage sack
- Filled in Derbyshire UK
- Best Use: 3-Season Alpine | Hiking | Trekking | Climbing
- Insulation: 800FP R.D.S Certified European Goose Down with Nikwax fluorocarbon-free Hydrophobic Finish
- Shell: 20D Pertex® Quantum recycled nylon ripstop (38gsm) with fluorocarbon-free DWR
- Lining: 20D Recycled Nylon (38gsm)
- Fill Weight: 400g | 14.1 oz
- Shape: Mummy
- Total Weight: 775g | 27 oz
- Dimensions (Shoulder/Hip/Foot): 70 x 52 x 41 cm | 27.5" x 20.5" x 16"
- Length: 215 cm | 86.5"
- Max User Length: 185 cm | 72.8"
- Pack Size: 35 x 23 cm | 13.8" x 9.1"
- Total Weight: 805g | 28.4 oz
- Dimensions (Shoulder/Hip/Foot): 70 x 52 x 41 cm | 27.5" x 20.5" x 16"
- Length: 215 cm | 86.5"
- Max User Length: 185 cm | 72.8"
- Pack Size: 35 x 23 cm | 13.8" x 9.1"
- Total Weight: 835g | 29.5 oz
- Dimensions (Shoulder/Hip/Foot): 70 x 52 x 41 cm | 27.5" x 20.5" x 16"
- Length: 215 cm | 86.5"
- Max User Length: 200 cm | 78"
- Pack Size: 35 x 23 cm | 13.8" x 9.1"
- Comfort Range: 30°F | -1°C
- Lower Limit: 19°F | -7°C
- Extreme (Risk Range): -13°F | -25°C
- Rab Sleep Limit: 20°F | -7°C
- Temperature Rating Guide
![](https://content-absolute-snow.rlab.net/upload/1/merch/c8f47baf_rab_logo.png)