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 800+ loft RDS white down fill with DWR Loft treatment adds greater resilience, higher loft and better warmth in damp conditions.

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

  • 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


  • Shell Fabric: 520 thread count, 10 by 10 denier ultralight nylon (26g/m2)
  • Lining Fabric: 520 thread count, 10 by 10 denier ultralight nylon (26g/m2)
  • Down Specifications: 800+ loft premium RDS white duck down
  • Down Treatment: Water resistant DWR Loft treatment
  • Zip Specifications: Side & Foot zips. YKK brand zips, dual sliders on side zip
  • Intended Use: Bushwalking
  • Season Rating: Four Season
  • Temperature Rating: Cold Sleepers & Women: -6C / Warm Sleepers & Men: –12C
  • Packed Dimensions: 16cm x 33cm (can be compressed further)

Maximum User Height:

  • Standard: 185cm (6’)
  • XL: 200cm (6’ 6”)


  • Standard: 1,099g (includes 680g of down)
  • XL: 1,240g (includes 780g of down)