With a full-length left-side zipper, half-length right-side zipper and footbox zipper, the Sea to Summit Traverse 25°F Synthetic sleeping bag provides top-notch ventilation in cool weather.
Fill
Thermolite fibers
Weight
Regular: 2 lbs. 7.9 oz.
Compressed Volume
Regular: 7.3 liters
Temperature Rating (F)
25 degrees (F)
- In colder weather, the unique WaveLoft construction allows the Thermolite® insulation to expand out into air-trapping curves for maximum warmth
- Full-length YKK #5 main side zipper and footbox zipper provide superior ventilation and allow the bag to be used as a comforter
- Shaped hood and zipper draft tube keep the cold out and warmth in
- Anatomically shaped footbox for extra space
- Form a snug double sleeping bag by zipping to any Sea to Summit Altitude, Journey or Venture sleeping bag (not included)
- Includes a lightweight 70-denier nylon compression bag
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 Sea to Summit 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 | 25 degrees (F) - ISO |
| Tested Comfort | 35 degrees (F) - ISO |
| Temperature Rating (F) | 25 degrees (F) |
| Temperature Rating (C) | -4 degrees (C) |
| Weight | Regular: 2 lbs. 7.9 oz. |
| Shell | 30-denier nylon 345T with C0 durable water repellent (DWR) |
| Zipper Location | Left/Right |
| Insulation Type | Synthetic |
| Fill | Thermolite fibers |
| Sleeping Capacity | 1-person |
| Lining | Lightweight 20-denier nylon 384T with C0 DWR |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Regular: 72 inches |
| Shoulder Girth (in.) | Regular: 61 inches |
| Hip Girth (in.) | Regular: 61 inches |
| Stuff Sack Size | Unavailable |
| Stuff Sack Volume | 14 liters |
| Compressed Volume | Regular: 7.3 liters |
| Gender | Unisex |