Rab Neutrino Pro 500 Down Sleeping Bag (-9°C/5°F)

The Neutrino Pro 500 is crafted to embody the Alpine spirit. Its narrow mummy fit minimises bulk and pack size, while its lightweight, high-performance materials make it an excellent choice for three-season, fast-and-light mountain expeditions. This sleeping bag is designed to handle significantly low night-time temperatures.

The Neutrino Pro 500 features 500g of 800FP goose down, stabilised within chevron-shaped baffles. These baffles are cleverly engineered to reduce the amount of fabric required compared to traditional horizontal baffles. Its trapezoid boxwall construction maximises loft, eliminates cold spots, and enhances warmth. Additional baffles along the zip and around the neck help to minimise heat loss, and an adjustable drawcord hood ensures the bag can be cinched snugly around the face.

The Pertex® Quantum Pro outer shell, constructed from recycled nylon, provides excellent wind and weather resistance, making it ideal for managing condensation and damp conditions, even on exposed bivvy ledges. The down is treated with Nikwax’s fluorocarbon-free hydrophobic finish, offering enhanced moisture resistance and prolonged performance in snowy or damp environments.

Each down bag is hand-filled in the UK, ensuring the down has never been compressed before use, thereby preserving its loft and thermal efficiency.

Features

• The outer shell is made of 20D Pertex® Quantum Pro recycled nylon ripstop (40gsm) with a fluorocarbon-free durable water repellent (DWR) finish.
• The lining consists of 20D recycled nylon (38gsm), providing a soft and durable interior.
• Filled with 800FP European goose down treated with Nikwax's fluorocarbon-free hydrophobic finish (500g / 17.6oz).
• Chevron-shaped baffles minimise down migration, optimise core warmth, and reduce weight.
• Trapezoidal boxwall construction with a differential cut maximises loft and prevents cold spots.
• A close-fitting adjustable neck baffle design decreases heat loss effectively.
• YKK 3/4-length main zip includes a synthetic-filled baffle to trap warmth.
• The hood is adjustable with an elasticated drawcord and cord lock for a secure fit.
• Features a YKK anti-snag zip insert and internal zip guard to ensure smooth operation.
• An angled foot box allows for a relaxed and natural sleeping posture.
• Includes a waterproof roll-top compression sack for compact packing.
• Comes with a zipped storage sack featuring a water-resistant base for convenient home storage.
• Each bag is hand-filled in Derbyshire, UK.
  
• Designed in a tapered mummy shape to enhance warmth retention and efficiency.
  
  

Sustainability Features

• Fluorocarbon (PFAS) free fabric
• Fluorocarbon (PFAS) free product
• Made with renewable energy
  
  

Specifications

Size Guide

Technology

Pertex® Quantum Pro

A robust yet lightweight water-resistant fabric designed to allow down to achieve maximum loft. Compact, breathable, and protective, it is perfectly suited for unpredictable mountain conditions.

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