Rab Neutrino

The 10-degree rating refers to the comfort limit, meaning it is designed to keep the average user warm in temperatures down to 10 degrees Fahrenheit. If you are a cold sleeper, you may want to pair it with a thermal liner or sleep in base layers when approaching that lower limit.

While the tapered mummy shape is designed to maximize thermal efficiency by reducing dead air space, the angled foot box provides enough room for your feet to sit naturally. It is not as spacious as a rectangular bag, but it offers more freedom of movement than traditional, restrictive mummy bags.

The Pertex Quantum shell is windproof and water-repellent, which is excellent for managing internal condensation and light moisture. However, it is not fully waterproof, so you should still use a bivy sack or tent if you are expecting heavy precipitation or sleeping in extremely damp conditions.

Yes, the Rab Neutrino uses 800-fill-power European goose down that is R.D.S. (Responsible Down Standard) certified. This ensures the down comes from animals that have been treated humanely throughout their lives.

Because it uses high-quality 800-fill-power down, this bag is highly compressible. It comes with a roll-top compression sack that helps you pack it down to a manageable size, making it a great choice for multi-day trips where pack space is limited.