Mountain Equipment


Mountain Equipment Helium 800 Down Sleeping Bag - Regular Length


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Perfect for backpacking and trekking in cold but dry conditions. Whether staying in unheated tea-houses in the Himalaya or winter rooms in the Alps this warm but lightweight bag is ideal.


  • 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:  -16°C/3°F
  • Comfort:  -4°C/25°F
  • Comfort Limit:  -11°C/12°F
  • Extreme:  -30°C/-22°F
  • Total Weight:  1260g / 44oz


  • 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 1260g/44oz 1310g/46.2oz
Total Fill Weight 766g/27oz 804g/28oz
Packed HxWxD 28x23x20cm/11x9x8in 29x23x21cm/11x9x8in