Helium 400

£250.00
Good Night's Sleep Temperature
-5°C/23°F
Comfort
3°C/37°F
Comfort Limit
-3°C/27°F
Extreme
-19°C/-2°F
Total Weight
860g / 30.3oz
ME-003538 5053817130717

An incredibly light, versatile and packable sleeping bag well suited to backpacking and cycle touring that will still happily cope with cooler nights during the spring and summer months.

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  • Helium 400 HELIUM™ 20 outer shell is very light and highly breathable
  • Helium 400 Alpine fit maximises thermal efficiency
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Specifications

  • HELIUM™ 20 outer shell is very light and highly breathable
  • 385g 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
  • Supplied with waterproof roll-top stuff-sack and storage cube
  • Weight : 860g / 30.3oz
Go back
£250.00
Good Night's Sleep Temperature
-5°C/23°F
Comfort
3°C/37°F
Comfort Limit
-3°C/27°F
Extreme
-19°C/-2°F
Total Weight
860g / 30.3oz
Colour
  • Me-01286 CosmosMe-01286 Cosmos
Zip Option
  • Left Zip
  • Right Zip
Length
  • Regular
  • Long
Size Guide

Description

An incredibly light, versatile and packable sleeping bag well suited to backpacking and cycle touring that will still happily cope with cooler nights during the spring and summer months.

Helium 400
Using slanted box-wall baffles throughout the entire main body of the helium bags means weight is removed from the bags structure. On the lightest weight models, further weight savings are gained by the use of stitch through baffles.
Helium 400
Our Lode Lock collar closure with its auto-locating closure combines all the advantages of a magnetic fastener with those of a mechanical lock. Its one-handed quick release closure uses magnets to draw the locking mechanism together and ensure that once connected it cannot be accidentally opened
Helium 400
A five-baffle hood that provides high levels of down control, low weight and excellent insulation. Its roominess imparts excellent versatility and, combined with the easy-run dual tether draw cords, superb comfort
Helium 400
A four-baffle foot piece featuring our unique Bulls Eye Technology and offset Sharks Toe foot that is engineered for our lightest technical sleeping bags. Its baffle construction restricts down migration whilst keeping weight and bulk to a minimum

Features

Down 700

Our high-quality duck down has an actual minimum down cluster content of 90% and is DOWN CODEX approved.

Helium

Helium fabrics are exceptionally light, compressible and tough. There densely woven construction ensures the highest levels of down-proofing, wind resistance... Read more

Helium fabrics are exceptionally light, compressible and tough. There densely woven construction ensures the highest levels of down-proofing, wind resistance and resistance to heat loss.

Down Codex®

The DOWN CODEX® scheme was developed to manage and reduce risk in our down supply chains, to ensure that both... Read more

The DOWN CODEX® scheme was developed to manage and reduce risk in 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.

A Good Night's Sleep Guarenteed

So confident are we that our sleeping bags will keep your warm and comfortable, in addition to the EN13537 laboratory... Read more

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

Size Guide

Alpine Fit

 

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 855g/30oz 880g/31oz
Total Fill Weight 385g/14oz 403g/14oz
Packed HxWxD 24x20x17cm/9x8x7in 25x21x17cm/10x8x7in
Helium 400