Rab Sleeping Bag, left opening Neutrino Pro

For the mountaineer looking for a lightweight and compact sleeping bag suited for sub-zero temperatures, the Neutrino 800 offers exceptional compressibility and warmth for its weight. Built from high-performance lightweight materials in a tapered mummy shape, it reduces bulk, weight, and size. It is perfect for year-round mountain use.

The Neutrino 800 is filled with 800g of goose down with a fill power of 800 cuin, stabilized in a cleverly designed chevron baffle that reduces the amount of fabric needed compared to traditional horizontal baffles. The trapezoidal baffle allows the down to fully loft, eliminating cold spots and optimizing warmth. Additional baffles along the zip and around the neck reduce heat loss, and thanks to the adjustable drawcord around the hood, you can tighten the bag around your face.

Now made with a recycled nylon lining and a recycled Pertex® Quantum outer shell, it is wind-resistant and a bit lighter for the planet too. The down is also treated with Nikwax, a fluorocarbon-free water repellent product designed to combat condensation. It features a ¾ length zip with snag-free protection, an internal zipped pocket, and a waterproof stuff sack for easy storage.

Hand-filled in the UK, all our down sleeping bags have never been compressed before use, thus maintaining their warmth and loft.

• Recycled Pertex® Quantum 20D ripstop nylon fabric (38 g/m2) with fluorocarbon-free DWR
• Lining application: Recycled 20D nylon fabric (38 g/m2)
• Certified European goose down to R.D.S. standard, 800 cuin fill power, Nikwax fluorocarbon-free water repellent finish
• Chevron baffle design that reduces down migration and optimizes warmth around the torso.
• Trapezoidal baffle construction with differential cut, to maximize loft and warmth
• Adjustable neck collar to reduce heat loss
• YKK ¾ length main zip with synthetic baffle to retain warmth
• YKK zipped internal pocket
• Slanted foot box for a relaxed sleeping posture
• YKK snag-free zip insert and internal snag-free protection
• Hand-filled in Derbyshire, UK
• Zipped sack with waterproof base for storing your gear at home
• Waterproof compression sack with roll-top closure included
• Main fabric: 100% recycled polyamide Lining application: 100% recycled polyamide
• Tapered mummy shape