Mountain Equipment Helium 400

Mountain Equipment Helium 400

Using 403g of minimum 700 fill power DOWN CODEX-approved duck down and a high-performance, 100% recycled Helium 20D outer fabric, the Helium 400 is warm, lightweight and ultra compressible for easy packing. Efficiently sized, supremely comfortable and very low in weight for backpacking and cycle touring, while still being warm enough to cope with chilly nights.

Slant-baffle construction through the body to maximise warmth, improve packability and prevent down migration, keeping you warm night after night and preventing cold spots. At the foot of the bag a four-baffle system focuses essential warmth around your feet, while in the hood, a five-baffle system optimises comfort and keeps the down exactly where it needs to be.

Inside the bag, a 100% recycled Supersoft 20D lining fabric with PFC free DWR offers breathability and durability for comfortable nights and a long lifespan, while a full-length Gemini™ entry zip baffle practically eliminates heat loss in this vulnerable area and is stiffened so it won’t catch in the zip. The low-profile magnetic Lode Lock™ closure and collar drawcords are effective and easy to use in the dark.

Designed with a technical yet comfortable Alpine 2.0 fit, Helium bags optimise thermal performance while minimising weight. With a Good Night’s Sleep Temperature of -5°C (23°F), the Helium 400 offers reliable warmth for travel to more northerly latitudes and for early spring and autumn use at higher altitudes.

User Size:

• Regular: 185cm (6 ft 1 in) maximum user height
• Long: 200cm (6 ft 6 in) maximum user height

Weight:

• Regular: 820g (1lb 12.9oz)
• Long: 870g (1lb 11.5oz)

Insulation:

• Duck Down is ethically sourced via DOWN CODEX© and RDS 3.0.
• Regular: 403g of 90/10 Duck Down with 700+ fill power.
• Long: 425g of 90/10 Duck Down with 700+ fill power.

Comfort

0°C/32°F

Comfort Limit

-6°C/21°F

Extreme

-24°C/-11°F