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Mountain Equipment


Mountain Equipment Helium 600 Down Sleeping Bag - Regular Length


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Low in weight and warm enough for early Spring and late Autumn use at higher altitudes or Northern latitudes.


  • HELIUM™ 20 outer shell is very light and highly breathable
  • 582g of 90-10 Pure Duck Down with a minimum fill power of 700
  • Alpine fit maximises thermal efficiency
  • Slanted Box-Wall baffles throughout
  • Mid-level side seams
  • 5 baffle anatomically shaped hood
  • 4 baffle anatomically shaped and offset foot-box
  • Full length Gemini™ zip baffle and integrated collar with Lode Lock™ closure
  • Good Night's Sleep Temperature:  -10°C/14°F
  • Comfort:  -1°C/30°F
  • Comfort Limit:  -8°C/18°F
  • Extreme:  -26°C/-15°F
  • Total Weight:  1070g / 37.7oz
  • Down 700

    Our high quality duck down has a minimum down cluster content of 90%, a minimum fill power of 700, and is DOWN CODEX approved.

  • Down Codex®
    The DOWN CODEX® is an animal welfare, traceability and auditing scheme to ensure that both animal welfare and quality were put at the heart of each and every one of our down products.n our down supply chains, to ensure that both animal welfare and quality were put at the heart of each and every one of our down products.

  • Fair Wear
    Together with Fair Wear Foundation (FWF), Mountain Equipment are working to achieve fair working conditions worldwide.

  • Helium
    Helium fabrics are exceptionally light, compressible and soft. Their densely woven construction ensures the highest levels of down-proofing and wind resistance.

  • A Good Night's Sleep Guaranteed
    So confident are we that our sleeping bags will keep your warm and comfortable, that in addition to the EN13537/ISO23537 laboratory ratings we quote, every Mountain Equipment sleeping bag comes with a separate ‘A Good Night’s Sleep Guaranteed’ temperature rating.


Regular Long
Length Inside (a) 190cm/75in 205cm/81in
Max Width Inside (b) 75cm/30in 75cm/30in
Inside Foot Width (c) 50cm/20in 50cm/20in
Max User Height 185cm/73in 200cm/79in
Total Bag Weight 1070g/38oz 1110g/39.2oz
Total Fill Weight 582g/21oz 609g/21oz
Packed HxWxD 26x23x20cm/10x9x8in 26x23x21cm/10x9x8in

    Customer Reviews

    Based on 1 review
    one gripe

    great bag, used it to -1 and still slept ok, attention to detail on the inner pull string cords for the neck and hood one is 2 strings one is a closed loop so you can feel which is which, only gripe is the zip snags when doing up from inside, never so bad that its got stuck tho, i can live with it, would i buy it again yes