Hike through snow to sleep in an alpine hut or camp out after a summer storm with confidence. The Sea to Summit Traverse TvII 25 sleeping bag won't let you down.
Fill
THERMOLITE synthetic fibers
Temperature Rating (F)
25 degrees (F)
- Tapered rectangular shape offers more space and comfort than a traditional mummy bag
- WaveLoft™ construction and high-quality THERMOLITE® insulation are lofty and durable for lasting warmth
- Anatomically shaped footbox offers extra space
- Oversize antisnag zip draft tubes and neck draft tube
- Free-Flow half-zip right side, full-length zip left side and separate foot zips offer freedom of movement and increased ventilation
- 30-denier nylon shell treated with durable water repellent (DWR) and 20-denier nylon lining are lightweight and compressible fabrics
- Lining fabrics attached to shell prevents tangles
- Includes strong 70-denier compression sack
- This bag is designed to zip with another (second sleeping bag sold separately)
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) - EN |
| Tested Comfort | 35 degrees (F) - EN |
| Temperature Rating (F) | 25 degrees (F) |
| Temperature Rating (C) | -4 degrees (C) |
| Shell | 30-denier nylon |
| Zipper Location | Left |
| Insulation Type | Synthetic |
| Fill | THERMOLITE synthetic fibers |
| Sleeping Capacity | 1-person |
| Lining | 20-denier nylon |
| Sleeping Bag Shape | Semirectangular |
| Stuff Sack Size | Unavailable |
| Stuff Sack Volume | Unavailable |
| Compressed Volume | Unavailable |
| Gender | Unisex |