Mont Helium Boxfoot 680 with 850+ Loft -6°C to -12°C Down Sleeping Bag

Ultralight warmth for lightweight bushwalking, with the versatility to handle snowy conditions for experienced adventurers.

The Helium 680 is the warmest model in the Helium series suitable for temperatures as low as -12°C. Ideally suited to cold weather and four-season camping including use above the snowline.

Ultralight shell fabric and high-loft down fill on the Helium bags mean higher performance for less weight. Durable 10 by 10 denier, 520 thread count Nylon weighing only 26g/m2 with a hot-rolled-cire treatment to prevent down leakage and increase durability. Premium 850+ muscovy down fill with DWR loft treatment adds greater resilience, higher loft and better warmth in damp conditions.

While the Helium 680 is rated to -12ºC, it is for the experienced alpinist. If you are a cold sleeper or just starting your alpine journey we recommend the Brindabella XT.

Features
Mummy shape with boxfoot for maximum efficiency
Radial Arc Baffle System maximises baffle loft height & warmth
Vertical baffles on torso maintain optimal down distribution
Differential cut reduces compression & cold spots
Box walled baffles for warmth & weight efficiency
Large down-filled 3D draft tube along zip retains heat
Contoured hood keeps down evenly distributed around head
Laminated 210 denier Nylon anti-snag shield along zips
Sewn with hydrophobic Epic thread to prevent moisture from wicking along seams and inside the shell
Tuck stitched for seam strength & greater water resistance
Full length YKK side zip with dual sliders
Includes ultralight siliconised-Nylon Z-Force Mechanical Advantage Compression Stuff Sack & 50L polyester storage sack with printed care & washing instructions