How to Choose Sleeping Bags for Backpacking
Mountain Equipment Helium GT 250 Sleeping Bag - Men's
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Light and packable enough for minimalist trips in warm weather, the men's Mountain Equipment Helium GT 250 sleeping bag still gives you a little extra room for added comfort.
Shop similar productsKey Details
Fill
700-fill-power duck down
Temperature Rating (F)
36 degrees (F)
- 100% recycled HELIUM™ 20-denier outer shell is very light and highly breathable; PFC-free durable water repellent (DWR) adds water resistance
- 100% recycled Supersoft 20-denier lining fabric with PFC-free DWR
- 289 g of 90/10 Pure Duck Down with a minimum fill power of 700
- GT fit is roomy and comfortable to allow for a variety of sleeping positions
- 5-baffle anatomically shaped hood
- Full-length Gemini zippered baffle with 140 cm zip and integrated neck collar with Lode Lock closure
- Slanted box-wall baffles and stitch-through baffles
- Midlevel side seams
- 4-baffle anatomically shaped and offset footbox
- Includes a waterproof roll-top stuff sack and a storage cube
- 100% of the down in this product comes from a Down Codex® audited source; this standard ensures both animal welfare and quality
- Mountain Equipment works with Fair Wear Foundation to achieve fair working conditions
Imported.
Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.
Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all Mountain Equipment Backpacking Sleeping BagsEach bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
| Best Use | Backpacking |
|---|---|
| Tested Lower Limit | 36 degrees (F) - ISO |
| Tested Comfort | 45 degrees (F) - ISO |
| Temperature Rating (F) | 36 degrees (F) |
| Temperature Rating (C) | 2 degrees (C) |
| Shell | 20-denier recycled nylon |
| Zipper Location | Left |
| Insulation Type | Down |
| Fill | 700-fill-power duck down |
| Sleeping Capacity | 1-person |
| Lining | 20-denier recycled nylon |
| Sleeping Bag Shape | Mummy |
| Shoulder Girth (in.) | 64 inches |
| Hip Girth (in.) | 61 inches |
| Stuff Sack Size | 7 x 9 inches |
| Gender | Men's |
| Sustainability | Contains recycled materials |
