Mont Helium 600 Down Sleeping Bag - Vertical Baffles

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MontSKU: 10.26.11L

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Size: STD Left Zip
Sale price$859.95 Regular price$899.95
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-4 to -10°C

The Helium 600 is suitable for temperatures as low as -10°C and still weighs 1kg! 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 white down fill with DWR Loft treatment adds greater resilience, higher loft and better warmth in damp conditions.

If you’re heavy on experience you’re better placed to travel a little lighter. Light on skills and light on gear decreases your safety margin.“ - Mont Ambassador and backcountry guide Doug Chatten.

While the Helium 600 is rated to -10ºC, it is not appropriate for alpine snow camping unless you're an experienced alpinist.

  • Tapered rectangular shape with a wide foot section for room to move
  • Radial Arc Baffle System on horizontal baffles maximises 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 & foot zip
  • Includes ultralight siliconised-Nylon Z-Force Mechanical Advantage Compression Stuff Sack & 50L polyester storage sack with printed care & washing instructions

Intended use: 4 Season bushwalking

Season rating: 4 Season

Women &/or cold sleeper: -4°C 

Men &/or warm sleeper: -10°C 

Shell fabric: 520 thread count, 10 x 10 denier ultralight Nylon (26g/m2)

Lining fabric: 520 thread count, 10 x 10 denier ultralight Nylon (26g/m2)

Standard size weight: 600g fill, 1000g total

Women's size weight: 600g fill, 980g total

Extra Large size weight: 700g fill, 1160g total

Packed size: 16 x 33cm*

Down rating: 800+ loft premium RDS white duck down

Down treatment: Water resistant DWR loft treatment

Zip side: Left (LHZ) or right (RHZ) on Standard (STD), left on Women's (WMNS) and XL

Zip configuration: Side & foot zips, YKK brand zips, dual sliders on side zip

Womens / SmallStandardExtra Large
Max. user height170cm,  5"7
185cm, 6"200cm, 6"6
Internal shoulder circ.160cm, 63in160cm, 63in170cm, 67in
Internal hip circ. 132cm, 52in132cm, 52in142.5cm, 56in
Internal foot circ. 115.5cm, 45.5in115.5cm, 45.5in121cm, 47.5in

*can be compressed smaller using compression sack

Contact us within 30 days of receiving your goods to request a refund or exchange if products are eligible (see: Return Policy).

All packaging or products must be in their original, re-sellable condition.

Outlet sales are final and can only be returned for exchange. Items found faulty or under warranty will be replaced or refunded.

Some special condition products are labelled as No Refund & Exchange Products. Sale of these items are final and are not eligible for neither refunds nor exchanges.

For safety reasons, K2 cannot accept returns on climbing equipment, socks, underwear and some other products unless faulty.

Please check out our refund policy if you need more information.

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