The Neutrino -12C / 10F sleeping bag from Rab is your best ally for alpine adventures. Designed with L.O.F.T 3D™ technology, it optimizes heat retention while reducing weight and bulk. The longitudinal baffles on the chest increase thermal efficiency, while the sidewall construction enhances down loft and comfort for side sleepers. Equipped with an anatomically adjusted hood with drawcord, it ensures maximum comfort and increased heat retention.
Every detail of the Neutrino -12C / 10F has been designed for comfort and durability. The sleeping bag features a 3D down collar, a main YKK® 2-way zipper 3/4 length with a down-filled baffle, and an anti-snag insert. The bag also comes with a lightweight compression sack and a zippered storage bag with a water-resistant base for home storage. Handmade in the UK, it uses 800FP European goose down with a fluorocarbon-free hydrophobic finish.
Ideal for trekking and mountaineering, the Neutrino -12C / 10F offers impressive warmth-to-weight performance, accompanying you on all your mountain getaways, even in cold weather.
L.O.F.T 3D™ baffle technology saves weight by reducing down migration, optimizing heat retention, and decreasing bag size.
Longitudinal chest baffles for increased thermal efficiency
Anatomical hood with drawcord for optimal comfort and heat retention
Internal drawcords positioned under the collarbone offer greater comfort when lying on the side.
Sidewall baffle construction for increased down loft and superior side sleeping comfort
3D-shaped down collar
Main YKK® two-way 3/4-length zipper with down-filled baffle
YKK® anti-snag zipper insert and internal zipper guard
Anatomically shaped foot box for a relaxed sleeping posture
Lightweight waterproof compression sack
Zippered storage bag with water-resistant base for home storage
Hand-filled in Derbyshire, UK
Tapered mummy shape
Temperature rating compliant with ISO 23537-2:2022 standard
Pertex® Quantum 10D ripstop fabric (26 g/m²) with durable water-repellent fluorocarbon-free treatment
Pertex® Quantum 20D ripstop fabric (38 g/m²) with durable water-repellent fluorocarbon-free treatment
Lining: Recycled 20D nylon, 38 g/m²
800FP European goose down with fluorocarbon-free hydrophobic finish by Grangers (600 g / 21.2 oz)
100% woven polyamide shell, down-filled sleeping bag
Weight: 1050 g

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