The Mountain Equipment Helium 400 XXL Left Zip Sleeping Bag is the  ˜gran turismo' of the Helium range. Wider and longer and offering exceptional comfort and performance for long-distance backpacking and trekking.


  • HELIUM™ 20D outer shell is very light and highly breathable
  • 467g of 90-10 Pure Duck Down with a minimum fill power of 700
  • GT fit: a wider and longer version of our Alpine Fit
  • 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


  • 3°C/37°FComfort
  • -3°C/27°FComfort Limit
  • -19°C/-2°FExtreme
  • 1030g / 36ozTotal Weight

We aim to ship out all orders placed before 2pm the same working day! For shipments in the United Kingdom mainland, we use Royal Mail Tracked 24 service (DPD Next Day for larger items and items that weigh over 4KG). Please see our shipping policy for more details.

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Mountain Equipment Helium 400 XXL Down Sleeping Bag - Left Zip


Item is in stock Only 0 left in stock Item is out of stock Item is unavailable

SKU: ME-003246-01286-LZ
Barcode: 505381711808


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Same day dispatch if order before 12 noon


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