This is one of the lightest bag for its warmth rating on the market.
At just 578 grams, the -3°C version is unbeatable. We’ve used technical know-how and quality materials to keep it warm and practical as well as super light: 3D, vertical V-baffles filled with 800-850 loft Hydrophobic Down; a full zip allows venting while the box foot prevents cold spots; and there’s a draft tube, three-quarter hood and internal chest drawcord.
The Nitrous is also versatile. It’s available in three warmth ratings and three sizes, each compatible with the Quest quilts to further extend the options. (The Quest or Quest Zero attach inside the bag easily and securely on either side of the zip.) Other features include super light, downproof by construction and breathable 10 denier Vapour Vent fabric and a zip protector on the YKK zip.
- Temperature Rating:
- Comfort: 4º
- Limit: -1º
- Extreme: -16º
- User Height:
- Small: 177cm
- Regular: 187cm
- Large: 195cm
- Shoulder Circumference:
- Small: 155cm
- Regular: 160cm
- Large: 178cm
- Small: 539g
- Regular: 578g
- Large: 618g
800-850 loft Hydrophobic duck down is our premium choice – a must for the gram counters. This high-lofting white duck down delivers luxurious warmth at a fine, feathery weight. This down has excellent compactability and loft recovery.
Down is the best insulation for lightweight sleeping bags due to its loft, compressibility and durability. However, this golden fibre has a failing: its ability to insulate drastically decreases when it is wet.
The solution is now here – Hydrophobic Down. This down has been selected to meet our rigorous standards, with a durable water-repellent (DWR) treatment applied after the cleaning and sorting process.
The benefits of Hydrophobic Down are:
- It absorbs less water in damp conditions
- It retains higher loft (insulation) in damp conditions
- It dries faster
Nitrous sleeping bags are made using lightweight and highly breathable 10-denier Vapour Vent fabric. This is our lightest fabric, used on our ultralight bags for top-of-the-line performance. This strong, compressible and highly breathable fabric is ‘downproof by construction’: the tight weave keeps the down in but allows water vapour to escape. This reduces the possibility of clamminess and allows the down to loft fully for maximum performance.