Rab

Neutrino Sleeping Bag: 0F Down

What Our Gearhead® Experts Are Saying:

"I like the Neutrino 0F for true winter missions where warmth-to-weight really matters. It packs down smaller than you’d expect for the temperature rating, and the loft stays consistent even after long trips. The fit is efficient without feeling claustrophobic, which is key on cold alpine nights."

We rely on the Neutrino 0F Sleeping Bag when winter objectives take us higher and conditions demand real insulation. Designed for alpine climbing and cold mountain nights, it balances serious warmth with a streamlined, packable build that suits technical winter travel.

Built with L.O.F.T 3D™ baffle construction, the Neutrino minimizes cold spots while maximizing usable loft throughout the bag. Longitudinal chest baffles improve thermal efficiency, while sidewall baffles and a 3D down-filled neck collar enhance comfort for side sleepers. Zoned Pertex® Quantum fabrics reinforce high-wear areas without adding unnecessary weight, and 800FP hydrophobic European goose down delivers reliable insulation in cold, dry conditions. The tapered mummy shape, anatomical hood, and footbox complete a sleeping bag designed for dependable winter performance.