Mountain Equipment Helium GT 250 Sleeping Bag (1°C/34°F)
Mountain Equipment Helium GT 250 Sleeping Bag (1°C/34°F) - Anvil Grey / Left Zip - Regular is backordered and will ship as soon as it is back in stock.
Description
Description
Light enough to carry on even the most minimalist of warm-weather adventures, this sleeping bag still provides a little extra space for added comfort.
Offering a roomier fit compared to the standard Helium collection, the Helium GT series has been developed with extended use in mind, providing exceptional comfort for those who prefer a bit more space to move. Filled with 289g of responsibly sourced, minimum 700-fill power duck down certified under the DOWN CODEX programme, and wrapped in a high-performance, 100% recycled Helium 20D outer fabric, the Helium 250 is an impressively efficient sleeping bag that remains lightweight and easily packable—ideal for minimalist warm-weather travel.
Slant-baffle construction runs through the main body of the bag, enhancing warmth, improving compressibility, and preventing the down from shifting—ensuring consistent insulation and eliminating cold spots. A four-baffle system concentrates warmth around the feet, while a five-baffle configuration in the hood enhances comfort and maintains precise down placement for reliable warmth.
Inside, the bag features a 100% recycled Supersoft 20D lining treated with PFAS-free DWR, offering both breathability and durability for lasting comfort. A full-length Gemini™ zip baffle helps to prevent heat loss along the entry point and includes a stiffened structure to avoid snags. Practical in low light, the Lode Lock™ magnetic closure and collar drawcords are simple to operate in the dark.
The Helium GT uses a more generous GT Fit, retaining the tapered Alpine profile while providing greater internal volume without compromising thermal performance. With a Good Night’s Sleep Temperature rating of 1°C (34°F), the Helium GT 250 is perfectly suited for long warm-weather backpacking trips and extended camping journeys.
Features
- The outer shell is made from 100% recycled HELIUM 20D fabric, which is exceptionally light and highly breathable with a PFAS-free DWR treatment.
- It is filled with 289g of 90-10 pure duck down, offering a minimum fill power of 700.
- The GT fit provides ample space for comfort and accommodates a variety of sleeping positions.
- The body features slanted box-wall baffles combined with stitch-through baffle construction.
- Mid-level side seams contribute to the overall performance and structure.
- The anatomically shaped hood uses five baffles to maximise comfort and thermal efficiency.
- A four-baffle, anatomically shaped and offset foot-box ensures focused warmth where it’s needed most.
- The full-length Gemini zip baffle includes a 140cm zip and an integrated neck collar secured with a Lode Lock closure.
- The interior uses a 100% recycled Supersoft 20D lining with PFAS-free DWR for comfort and breathability.
- It is supplied with a waterproof roll-top stuff sack and a storage cube for convenience and protection.
Specifications
Weight | 690 g / 1 lbs 8.3 oz |
Temperature ratings |
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Good Night's Sleep Temperature | (1°C/34°F) |
Technology
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Down DOWN CODEX® |
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Down 700 Down is the finest insulator. Manmade insulations cannot match its warmth-to-weight ratio, compressibility, long lifespan, and softness. Duck Down is great for insulated clothing and equipment for all but the most serious expeditions. |
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Helium Helium fabrics are exceptionally light, compressible, and soft. Their densely woven construction ensures the highest levels of down-proofing and wind resistance. |
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