The Rab Neutrino Endurance line of sleeping bags are basically Rab's Neutrino bags with tougher outer fabric. The Pertex Endurance outer is much more water resistant than Pertex Quantum, meaning that you don't need to worry as much about getting the bags a bit damp from condensation or spills. The lining fabric is treated with Polygiene a permanent fabric treatment that prevents odours forming and keeps your feeling fresher for longer. This makes them ideal for prolonged mountain use or Alpine bivis - they are a perfect bag for the mountaineer. The inner uses Pertex Quantum on the hood and collar to provide further water resistance, with Pertex Endurance on the rest of the inner to keep the weight down. The Neutrino Endurance 600 is a great year-round bag for Alpine use, providing excellent warmth without carrying too much weight.
Hydrophobic down is used to provide better performance in damp conditions. This is achieved by washing in a Nikwax coating in the early stages of production. This down is NOT waterproof, but will retain its loft for longer if it gets damp, and will dry faster. The Pertex Quantum fabric has a degree of water resistance, but for something more durable and water resistant check out the Neutrino Endurance line of bags. A small internal zipped pocket is ideal for keeping small essentials to hand, keeping batteries warm or securing valuables in dodgier regions!
For more information please read Down Fill Power Explained.
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