Tried and trusted by mountaineers everywhere, the Neutrino is a versatile down sleeping bag built to keep you warm, wherever you hunker down.

Activities: Fast & light adventures, Mountaineering

Shape: Tapered Mummy Size and shape guide

Weight: 1070g/2lb 5.74oz

Packed size: 20cm x 35cm (7.9in x 13.8in).

There are endless alpine landscapes waiting to be explored, and this is the sleeping bag to get you there. Offering outstanding warmth for weight with a robust, all-mountain design, it’s a versatile bag that easily adapts to a range of alpine pursuits, from long-distance treks to rugged winter ascents. We’ve strategically placed fabrics to give you maximum durability and loft where you need them, creating a hardwearing, hardworking bag that’s nonetheless super packable and lightweight. Filled with 800FP down in our groundbreaking L.O.F.T 3D™ baffle construction which eliminates cold spots, it provides the efficient warmth you need for technical pursuits on alpine terrain.