The Neutrino Pro 400 is a protective but lightweight down-filled sleeping bag primarily designed for alpine climbers, lightweight mountaineering trips and cold conditions.
Well suited to alpine climbers, our new Neutrino Pro range is designed to take you from big wall bivi ledges through to lightweight mountaineering and winter conditions. Significantly lighter than its predecessor, the Neutrino Endurance, warmth has not been compromised. In fact, careful consideration of construction and thermal efficiency has bettered its temperature ratings and lowered overall weight.
Hand filled in Derbyshire, Neutrino Pro 400 contains the highest quality 800FP ethically sourced European Goose Down. Designed to maximum warmth, the chevron shaped baffles ensure the down is held over the centre of the body and prevent down migration, while the trapezoidal chamber design eliminates cold spots.
The outer is made from the durable and water-resistant Pertex® Quantum Pro providing excellent protection in both cold and damp weather. Cut to have a ‘mummy taper’ shape and angled footbox; this bag has a low pack size and weight without compromising on warmth or comfort and still allows for movement.
The Neutrino Pro 400 has an ergonomically designed, close-fitting internal collar with a hood drawcord, as well as a 3/4 length YKK anti-snag zip with an insulating draft tube to keep out the cold. Other features include a handy internal stash pocket, dry bag compression stuff sack for transport and cotton sack for storage.
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Rab's Neutrino Pro Down Sleeping Bags have seen an update, refining the fabric, design and features to create warmer, yet lighter sleeping bags with an innovative new chamber design allowing more efficient usage of down.
The baffles are now made in a chevron shape which acts to funnel the down to it's correct position as you shake the bag out prior to climbing in. This has also allowed Rab to put one less baffle line into the construction of the bags - saving 10grams of weight. There has also been an obsessive focus on the down chambers themselves, ensuring the chamber size is matched to the down volume to achieve the most efficient loft and therefore insulating value.
In line with new branding from Pertex the new names for theses sleeping bags are NEUTRINO PRO, using Pertex Quantum Pro fabric (previously known as Endurance) offering the same highly water resistant outer as before.
RAB Neutrino versus Neutrino Pro - Rab produces two identical series of bags, the Neutrino and Neutrino Pro. The Pro bags have a Pertex Quantum Pro 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 Quantum Pro 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 Quantum Pro bags - but if you are camping where damp may be a problem - such as under a tarp - then the Quantum Pro bag is more appropriate.
- Reviewed by Ultralight Outdoor Gear
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Extra Long Specs
What is the 'RAB Sleep Limit'? - The recognised method of testing sleeping bags is by using the standard EN13537 temperature ratings, which are carried out by independent testing houses. The test is performed with the sleeping bag resting on an insulating mat to simulate the bag in use. The same sleeping mat is used for all testing of all sleeping bags.
RAB's view is that the sleeping mat used is inappropriate for bags designed for very low temperatures because a user would be sleeping on a highly insulative winter orientated sleeping mat, not the standard one used in the test. The test results would therefore indicate a lower performance for the sleeping bag than a user would experience in a typical situation.
RAB have therefore defined their own 'RAB Sleep Limit' as the equivalent 'Comfort limit' but based on their athletes experience and extrapolating results from other bags.