The Neutrino 400 XL is a light-weight, minimalist down-filled sleeping bag in an extra long length, designed for light-weight end uses, where warmth-to-weight is a prime concern.
High quality 800FP European Goose Down is secured by light-weight Pertex® Quantum fabrics, to ensure maximum loft for the down, without increasing the weight of the bag. The Neutrino 400 is styled in a ‘mummy taper’ shape, to dramatically reduce pack size, and features YKK zips throughout. Other key features include am internal collar and hood drawcord, anti-snag zipper webbing tape and a unique trapezoidal baffle chamber design, to eliminate cold spots.
||||Rab Hydrophobic Down - The new range of Rab Down products now include Hydrophobic treated down adding more protection from water at no extra weight. Click Logo to read more...|
||||Pertex Quantum Fabric - Light enough to enable down to loft better, comfortable enough for next-to-skin. Click Logo to read more...|
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RAB have been making sleeping bags for over thirty years so they know a thing or two about how to put one together. Working with Leeds University they have been working hard to further improve their warmth to weight ratios by perfecting the down volume/chamber size ratio to maximise loft and minimise fabric use, resulting in a lighter bag with no compromise on performance. There are also slight changes to the cut of the bags to support the chamber work that they have been doing.
All their down bags are now filled with Hydrophobic down which improves their performance in adverse damp conditions, this is especially significant if you want to use a bag night after night without the opportunity to air it off - under these conditions the down can be compromised by body moisture passing through it. Furthermore the Hydrophobic treatment neither adds weight nor impairs loft.
All the down is certified as responsibly sourced by the European Down and Feather Association.
All this adds up to a pretty impressive product. The Neutrino 400 benefits from RAB's technical improvements and despite being an impressively low weight the bag has a full zip with baffle, shoulder baffle and shaped foot.
RAB Neutrino versus Neutrino Endurance - Rab produces two identical series of bags, the Neutrino and Neutrino Endurance. The Endurance bags have a Pertex Endurance fabric outer shell which has a high water resistance making it more suited to damp conditions, such as bivying or tarp camping. The standard Neutrino bags use Pertex Quantum fabric for the outer which whilst it doesn't have the water resistance of Pertex Endurance it is more breathable - making the bag arguably more comfortable.
What we say is that if you are going to be using a tent all the time then there's no reason to go for the Endurance bags - but if you are camping where damp may be a problem - such as under a tarp - then and Endurance bag is more appropriate.
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