Built for fast-moving alpine missions and technical mountain terrain, the Rab Neutrino (-6°C) delivers exceptional warmth for weight in a lightweight, highly packable design. It is engineered for climbers, trekkers, and alpinists who need reliable insulation without compromising mobility or pack space.
Filled with premium 800 fill power down, the Neutrino uses advanced L.O.F.T 3D™ baffle construction to eliminate cold spots and maximise thermal efficiency. This precision construction ensures consistent warmth distribution while minimising overall insulation weight, making it ideal for demanding alpine pursuits such as spring ascents and long-distance traverses.
Strategically placed durable fabrics enhance abrasion resistance in high-wear zones while maintaining loft where it matters most. The result is a robust yet lightweight sleeping bag designed for real mountain use. Hand-filled in the UK, the down has never been pre-compressed, preserving maximum loft and long-term insulating performance. When performance, packability, and warmth all matter, the Neutrino stands out as a technical alpine essential.
FEATURES:
- Longitudinal chest baffles provide an efficient way of conserving heat around your torso.
- Pioneering L.O.F.T 3D™ construction features helix-shaped baffles that prevent down migration and maximise heat retention.
- 20D Pertex® Quantum on the base and footbox for durability on rough ground, while 10D Pertex® Quantum on the top increases loft and packability.
- Sleep comfortably on your side thanks to the sidewall baffles, which reduce cold spots and ensure you’re not lying on a seam.
- Cinch in the hood to seal in the heat, while the down-filled collar sits snugly around your neck.
- Two-way zip provides ventilation when you need it, while the insulated zip baffle prevents cold spots when the temperature drops.
- Internal cordlocks positioned below your collar bone for greater side sleeping comfort.
- YKK® anti-snag zip insert and anti-snag internal zip guard.
- Anatomically shaped foot box allows you to sleep in a relaxed position.
- Lightweight dry bag compression stuff sack.
- Zipped storage sack with water-resistant base for home storage.
- Hand-filled in Derbyshire UK.
- Tapered mummy shape.
SPECIFICATIONS:
- Weight: 870g/1lb 14.69oz
- Insulation: 800FP European goose down with Grangers fluorocarbon-free hydrophobic finish (400g / 14.1oz)
- Main fabric: 10D Pertex® Quantum ripstop (26g/m²) with fluorocarbon-free DWR
- Secondary fabric: 20D Pertex® Quantum ripstop (38gsm) with fluorocarbon-free DWR
- Fabric lining: Lining: Recycled 20D nylon, 38g/m²
- ISO (23537-1:2022) temperature rating: Comfort: 0°C (32°F), Limit of comfort: -6°C (21°F), Extreme: -24°C (-11°F)
- Limit of Comfort: -6°C / 21°F
- Packed size: 18cm x 30cm (7.1in x 11.8in)
- Product code: QSN-16