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We review the Rab Nuetrino Endurance 3 season sleeping bag to see if its high price is matched by equally impressive performance and comfort.

rab neutrino endurance 400 maya
Overall Score
Great range of features

The Nuetrino Endurance has a comfort rating of 1.5 degrees C and a weight of only 890g. The down fill is very high quality 800FP (Fill Power) European Goose Down which is treated with a hydrophobic treatment and is about the best you can get.

You can find Pertex fabrics on much of Rab's gear these days and the Nuetrino Endurance is no exception, with a water resistant but highly breathable Pertex Endurance fabric adorning the outer as well as the inner fabric on the hood and collar and a Pertex Quantum inner fabric. This mix feels luxurious and comfortable as well as having the benefits of being weather resistant and durable.

Inside, the bag is one of the most comfortable on test with a good amount of elbow room. The bag tapers down into a mummy shape but not so much so that you feel too confined. The drawcord adjustable hood and thermal collar are both excellent and fit well providing a useful hit of warmth on colder nights.

The trapezoid baffle design seems to work well with no noticeable cold spots when used in conjunction with a good quality sleeping mat.

Although more expensive than some of the other sleeping bags we have tested in this category, the Nuetrino Endurance 400 has the best range of features and the best balance between thermal performance, weight and pack size, so it's the one that we'd pack before heading out on an adventure.

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