Say goodbye to bulky sleeping bags with this sleek design that provides remarkable warmth relative to its weight, perfect for your speedy mountain escapades. Stuffed with 800FP goose down and encased in eco-friendly, wind-resistant Pertex® Quantum fabric, this bag checks all the boxes for efficiency.

If you're an alpinist in search of a lightweight, compact bag that can handle chilly conditions, the Neutrino 400 should be on your radar. It ensures amazing packability while keeping you warm, all thanks to its snug mummy shape that minimizes space and weight. Crafted from premium materials, it’s your go-to for three-season adventures.

The Neutrino 400 is packed with 400g of 800FP goose down, arranged in clever chevron baffles that require less fabric than typical horizontal designs. The trapezoidal boxwall baffle structure enhances the down’s loft, banishes cold spots, and maximizes warmth. Extra baffles along the zipper and around the neck help reduce heat loss, and with an adjustable hood drawcord, you can snuggle the bag tightly around your face.

Now featuring a recycled nylon lining and a recycled Pertex® Quantum exterior, it’s wind-resistant and kinder to the planet. Plus, the down is treated with Nikwax’s fluorocarbon-free hydrophobic finish to handle moisture. It includes a ¾ length zipped opening with anti-snag guards, an internal zipped pocket for small essentials, and arrives in a waterproof roll-top compression sack for easy transport.

Hand-filled in the UK, every Rab down sleeping bag is never compressed before use, preserving down loft and heat retention.

• EN (13537:2012) Temperature rating: ISO EN: Comfort: -1°C, Limit: -7°C, Extreme: -25°C
• Rab Sleep Limit: -7°C
• Weight: (Regular) 775g, (Long) 835g, (Wide) 835g, (Long Wide) 895g
• Product Code: QSM-90
• 20D Pertex® Quantum recycled nylon ripstop (38gsm) with fluorocarbon-free DWR
• Lining: 20D Recycled Nylon (38gsm)
• 800FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (400g)
• Weight-saving chevron baffle structure to minimize down movement and maximize warmth
• Trapezoidal boxwall construction with a differential cut for enhanced loft and warmth
• Close-fitting adjustable neck baffle to reduce heat loss
• YKK ¾ length main zip with synthetic-filled baffle to retain warmth
• YKK zipped internal stash pocket
• Angled foot box for a comfy sleeping position
• YKK anti-snag zip insert and internal anti-snag zip guard
• Hand-filled in Derbyshire, UK
• Zipped cotton sack with water-resistant base for storage at home
• Includes waterproof roll-top compression sack
• Main: 100% recycled polyamide. Lining: 100% recycled polyamide
• Tapered mummy shape

neutrino, 400, (-7°c), down, sleeping, bag, qsm-90, bags, mats, seats