Mountain Equipment Helium 800 Sleeping Bag – Regular (L/Z)
The Mountain Equipment Helium 800 Sleeping Bag uses 795g of minimum 700-fill power DOWN CODEX-approved duck down and a high-performance, 100% recycled Helium 20D outer fabric, the supremely comfortable Helium 800 is warm, lightweight and ultra compressible for easy packing. Versatile, durable and with expedition-proven features, it excels whether backpacking at altitude or ski touring through winter mountains.
Slant-baffle construction through the body maximises warmth, improves packability and prevents down migration, keeping you warm night after night and preventing cold spots. At the foot of the bag, a four-baffle system focuses warmth around your feet—essential when spending extended time in cold climates—while in the hood, a five-baffle system optimises comfort and keeps the down precisely where it needs to be.
Inside the bag, a 100% recycled Supersoft 20D lining fabric with PFAS-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 practical 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 -16°C (3°F), the Helium 800 is a reliably warm and packable bag, perfect for camping, trekking and touring in cold conditions.
Mountain Equipment Helium 800 Sleeping Bag Features:
Insulation:
- Optimised baffle-by-baffle for maximum warmth-to-weight ratio.
- Regular: 795g of 90/10 Duck Down with 700+ fill power.
- Long: 840g of 90/10 Duck Down with 700+ fill power.
- Ethically sourced through DOWN CODEX© and RDS 3.0.
- Each bag includes a unique DOWN CODEX© code for transparency on sourcing and fill power.
Materials:
- Recycled HELIUM™ 20D: A lightweight (38gsm), recycled 20-denier fabric that balances durability, compressibility, and weather resistance. Densely woven for wind and heat loss resistance with a PFAS-free DWR finish.
- Supersoft™ Lining: 38gsm 20D recycled downproof nylon for breathability, durability, and next-to-skin comfort. PFAS-free DWR finish.
Patterning & Design:
- Designed for long-term durability and high performance.
- Women’s Alpine Fit: A refined, tapered shape with a zoned EXL® system that improves thermal efficiency while keeping the weight low.
- Slanted box-wall baffles: Reduce structural weight while optimising insulation.
- Strategic fill distribution: High-density fill in key areas (underside, hood, foot box) to prevent down migration and enhance warmth.
Foot box:
- Trapezium 4 System: A four-baffle design that enhances warmth and prevents compression around the feet.
Hood:
- Five-baffle construction for precise down control, low weight, and superior insulation.
- Spacious yet snug with dual tether drawcords to minimise heat loss.
Zip Baffles & Collars:
- Gemini™ Baffle System: A lightweight, low-profile design that minimises heat loss while maintaining protection.
- Lode Lock™ System: A secure, magnetic fastener with a mechanical lock for a one-handed quick-release closure.
- Integrated, adjustable down-filled neck collar for extra warmth.
Additional Features:
- Waterproof roll-top stuff sack: Maximises pack space and keeps gear dry.
- Storage Cube: Preserves down loft for better long-term performance. Ideal for at-home storage.
Mountain Equipment Helium 800 Sleeping Bag Specifications:
User Size:
- Regular: 185cm (6 ft 1 in) maximum user height
- Long: 200cm (6 ft 6 in) maximum user height
Weight:
- Regular: 1230g (2lb 11.4oz)
- Long: 1290g (2lb 13.5oz)
Insulation:
- Duck Down is ethically sourced via DOWN CODEX© and RDS 3.0.
- Regular: 795g of 90/10 Duck Down with 700+ fill power.
- Long: 840g of 90/10 Duck Down with 700+ fill power.
Temperature Ratings (EN13537/ISO23537):
- Comfort: -8°C (18°F)
- Comfort Limit: -15°C (5°F)
- Extreme: -36°C (-33°F)
Good Night’s Sleep Temperature:
- -16°C (3°F)
Packed Size:
- 31cm x 24cm x 24cm (12.2in x 9.4in x 9.4in)
Manufactured in:
- Vietnam
