Mountain Equipment Helium 250 Women’s Down Sleeping Bag
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Ideal for: Backpacking & Trekking
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Weight: 600g/1 lbs 5.2ozs
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Good Night’s Sleep Temperature: 3°C/37°F
Crafted with 261g of 700-fill power DOWN CODEX-approved duck down and a 100% recycled Helium 20D outer fabric, the Helium 250 is a highly efficient, lightweight, and packable sleeping bag. It is an ideal choice for backpackers and tourers seeking to reduce their pack size, especially in warm weather conditions.
Utilizing slant-baffle construction throughout the body enhances warmth, increases packability, and prevents down migration, ensuring you stay warm throughout the night without any cold spots. Along the foot of the bag, a four-baffle system directs warmth towards your feet, while the hood features a five-baffle system for maximum comfort and precise distribution of down.
The bag features a 100% recycled Supersoft 20D lining fabric with PFAS-free DWR for breathability and durability, along with a full-length Gemini™ entry zip baffle to reduce heat loss in the vulnerable area. The magnetic Lode Lock™ closure and collar drawcords are convenient and user-friendly even 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 1°C (34°F), the Helium 250 is the best choice for warm-weather camping and backpacking.
Mountain Equipment Helium 250 Specification:
User Size:
- Regular: 170cm (5 ft 6 in) maximum user height
- Long: 185cm (6 ft 1 in) maximum user height
Weight:
- Regular: 600g (1lb 5.2oz)
- Long: 620g (1lb 5.9oz)
Insulation:
- Duck Down is ethically sourced via DOWN CODEX© and RDS 3.0.
- Regular: 242g of 90/10 Duck Down with 700+ fill power.
- Long: 256g of 90/10 Duck Down with 700+ fill power.
Temperature Ratings (EN13537/ISO23537):
- Comfort: 7°C (45°F)
- Comfort Limit: 2°C (36°F)
- Extreme: -12°C (10°F)
Good Night’s Sleep Temperature:
- 3°C (34°F)
Packed Size:
- 19cm x 17cm x 15cm (7.5in x 6.7in x 5.9in)
Manufactured in:
- Vietnam
Mountain Equipment Helium 250 Features:
Insulation:
- Optimised baffle-by-baffle for maximum warmth-to-weight ratio.
- Regular: 242g of 90/10 Duck Down with 700+ fill power.
- Long: 256g 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.
