Backpacker April '08 proclaims the Marmot Hydrogen bag is ''sleep-anywhere evidence that luxury and lightweight can go hand in hand.''
Fill
850-fill goose down
Temperature Rating (F)
30 degrees (F)
- The lightweight Marmot Hydrogen works perfectly for warm-weather climbing and backpacking.
- Filled with super-lofty, ultralight, 850-fill-power goose down for an unsurpassed warmth-to weight ratio
- LightForce nylon shell fabric is treated with a Durable Water Repellent finish that causes moisture to bead up and roll off
- Shaped hood envelopes your head in warmth, while the Face Muff allows hood to be cinched snug without digging into your face
- Down-insulated draft tube backs the full-length zipper to keep the cold out
- Classic trapezoidal foot box lets your feet move freely and comfortably, and allows goose down to loft fully to keep your toes toasty warm
- Ultralight stuff sack and storage bag included
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 Marmot 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 | 29 degrees (F) - EN |
| Tested Comfort | Unavailable |
| Temperature Rating (F) | 30 degrees (F) |
| Temperature Rating (C) | -1 degrees Celsius |
| Shell | Nylon |
| Insulation Type | Down |
| Fill | 850-fill goose down |
| Lining | Polyester |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 6 x 12 inches |
| Gender | Unisex |