For alpinists seeking a lightweight, low-bulk sleeping bag designed for spring and summer conditions, the Neutrino 200 delivers outstanding warmth relative to its weight while maintaining exceptional packability. Featuring a narrow mummy fit to minimise bulk and reduce pack size, it is constructed with high-performance, lightweight materials, making it an ideal companion for two-season mountain adventures.
The Neutrino 200 is insulated with 200g of 800FP goose down, securely held in chevron-shaped baffles that use less fabric than traditional horizontal baffles. The trapezoidal boxwall baffle construction enables maximum loft, eliminates cold spots, and enhances warmth retention. Additional baffles along the zip and around the neck help to reduce heat loss, while an adjustable drawcord in the hood allows the bag to be cinched snugly around the face for added insulation.
Now crafted with a recycled nylon lining and a recycled Pertex® Quantum outer, the sleeping bag offers wind resistance while reducing its environmental impact. The down is also treated with a Nikwax fluorocarbon-free hydrophobic finish, providing improved resistance to moisture from condensation. A ¾ length zip with anti-snag guards ensures smooth operation, while a zipped internal stash pocket offers convenient storage for essentials. The sleeping bag also comes with a waterproof roll-top compression sack for easy packing and transport.
Each down bag is hand-filled in the UK and benefits from having never been compressed prior to use, preserving the loft and maximising warmth.
Features
- The outer shell is made from 20D Pertex® Quantum recycled nylon ripstop (38 gsm) with a fluorocarbon-free DWR finish for durability and water resistance.
- The lining is crafted from 20D recycled nylon (38gsm), ensuring a soft and comfortable interior.
- Filled with 800FP European goose down, treated with a Nikwax fluorocarbon-free hydrophobic finish (200g / 7.1oz) to enhance moisture resistance.
- The weight-saving chevron baffle design minimises down migration and optimises core warmth.
- A trapezoidal boxwall construction with a differential cut allows for maximum loft and warmth.
- The close-fitting, adjustable neck baffle design helps to retain heat and minimise cold spots.
- A YKK ¾ length main zip includes a synthetic-filled baffle to trap warmth effectively.
- A YKK zipped internal stash pocket provides a secure space for small valuables.
- An angled foot box enhances comfort by allowing a relaxed sleeping posture.
- A YKK anti-snag zip insert and internal zip guard ensure smooth and hassle-free operation.
- Each bag is hand-filled in Derbyshire, UK, maintaining high-quality insulation.
- A zipped storage sack with a water-resistant base is included for convenient home storage.
- A waterproof roll-top compression sack is provided for compact and secure packing.
- The main fabric and lining are both made from 100% recycled polyamide, contributing to sustainability.
- Designed in a tapered mummy shape for optimal thermal efficiency and weight reduction.
Sustainability Features
- Fluorocarbon (PFAS) free fabric
- Fluorocarbon (PFAS) free product
- Greater than 50% recycled materials
- Made with renewable energy
Specifications
| Weight | (Regular) 579 g / 20.4 oz, (Long) 624 g / 22.0 oz |
| Insulation | 800FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (200 g / 7.1 oz) |
| EN (13537:2012) temperature rating | ISO EN: Comfort: 4°C (39°F), Limit: -1°C (30°F), Extreme: -°C (°F) |
| Rab sleep limit | -1°C / 30°F |
| Packed size | 30 cm x 20 cm (11.8 in x 7.9 in) |
Size Guide
| Shape | Tapered Mummy |
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Technology
Pertex® Quantum
This lightweight, windproof fabric is designed to enhance insulation by allowing it to achieve maximum loft. Offering exceptional packability and reliable protection, it is perfectly suited for mountain pursuits.
