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Mountain Equipment Helium GT 400 REG sleeping bag, 185 cm, anvil grey

359 €
RRP 399 €
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From 14.10.2026 (Wednesday) Check availability
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Delivery method on Thursday 15.10.2026
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Delivery method on Thursday 15.10.2026
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Extended return option up to 100 days More info
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Choose the right sleeping bag

Mountain Equipment's down sleeping bag range is truly extensive. From ultralight summer sleeping bags to expedition sleeping bags for extreme conditions. We have therefore prepared a concise guide to help you navigate and choose the right down sleeping bag.Quality sleep is one of the basic requirements for full regeneration during every outdoor activity. The Mountain Equipment HELIUM GT 400 down sleeping bag is designed primarily for long journeys. Thanks to its generous cut, it is particularly comfortable and ideal for those who like to sleep on their side or back. It weighs an incredible 890g and you can sleep comfortably in it at -5°C. It is filled with very high-quality duck down. You get a 10-year warranty on the sleeping bag.
  • 100% recycled HELIUM TM 20 D shell fabric is lightweight, highly breathable and wind-resistant, and treated with PFC-free DWR water-repellent finish.
  • 449 g of 90/10 duck down with a minimum fill power of 700 cuin.
  • GT Fit cut - spacious and comfortable, allows sleeping in various positions.
  • Slanted chambers – for maximum thermal efficiency with minimum weight.
  • Optimized down distribution and precise volume for each chamber individually.
  • Anatomically shaped 5-chamber hood.
  • Anatomically shaped and angled 4-chamber footbox.
  • Full-length side baffle and integrated neck collar with easy Lode Lock™ magnetic closure.
  • Supplied with a waterproof stuff sack and mesh storage sack.

HELIUM 20 – 100% recycled, very lightweight, easily packable

Helium 20 fabric is 100% recycled, exceptionally lightweight, packable, soft and at the same time very durable. The high weaving density prevents down leakage, is wind-resistant and prevents heat loss. Thanks to the PFC-free water-repellent DWR treatment, it is also water-resistant. This fabric is ideal where low weight and packability are the most important factors.
  • Extremely lightweight - 38 g/m 2.
  • Highly breathable.
  • Wind resistant.
100% recycled lining fabric SUPERSOFT TM 20 is chosen for its low weight, high breathability, exceptional durability and pleasant feel. It is also a down-proof fabric.
  • Low weight (37 g/m 2 )
  • High breathability
  • Durability

High-quality duck down with 700+ fill power

Very high-quality duck down from China contains at least 90% down, its fill power is at least 700 cuin and meets the ethical DOWN CODEX ® standard. The down is gently cleaned with water without chemical treatment. This reduces mites and their living environment, which is appreciated by allergy sufferers. The down retains its important fat and loft, is well packable, has high insulation and low weight.
  • 449 g of down.
  • Minimum fill power 700+ cuin.
  • 90:10 down ratio.
  • Meets DOWN CODEX ®.
  • Long lifespan.
Color: Anvil Grey
Lining: SUPERSOFT™ 20
Outer fabric: HELIUM™ 20
Membrane: No
DWR (Durable Water Repellent): Yes
Type of insulating material: down
Footbox: 4 chambers|anatomically shaped|Shark Toe
Chamber type: slanted chambers
Fit: GT Fit
Internal pocket: No
Drawcord collar: Yes
Compression sack: Yes
Zip model: YKK®
Hood: 5 chambers|anatomically shaped
Hood adjustability: Yes
Comfort: 0
Extreme: -24
Comfort limit:-6
Good Night Sleep: -5
Packed dimensions: 24x21x20
Maximum height: 185
Internal length: 192
Maximum internal width: 76
Sleeping bag length: 192
Storage sack: Yes
Gender: Unisex
Product details
Sex Men, Women, Unisex
Colour anvil grey
Filling down
Temperature specification three-season, winter
Sleeping bag shape mummy
Sport alpinism, camping
Sleeping bag weight 751 - 1000 g
product ID 184713
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Honesty, responsibility and deep respect for the mountains, the environment and nature. These are the values of the British brand Mountain Equipment, which has been part of countless expeditions and climbs to the highest peaks in the world since 1961. For more than 60 years, it has been producing top quality equipment for the most daring mountaineering and polar expeditions to the most inhospitable places on the planet. It prides itself on premium materials and is a major development partner of the GORE-TEX membrane manufacturer

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