Durable and dependable—even in the cold and damp—the Rab Solar Ultra 1 sleeping bag combines advanced insulation with Thermo Ionic Lining Technology (TILT) for dramatic heat retention.
Fill
Stratus synthetic sheet recycled polyester
Weight
1 lb. 15 oz.
Temperature Rating (F)
35 degrees (F)
- Shell fabric is 38 g, 20-denier Atmos™ recycled ripstop nylon with a fluorocarbon-free durable water repellent (DWR) finish
- Lining is 41 g, 20-denier Atmos recycled ripstop nylon with a fluorocarbon-free DWR finish
- Upper is insulated with recycled Stratus synthetic sheet insulation in a triple-layer construction: 100 g/100 g/40 g polyester (100% recycled)
- Base is insulated with recycled Stratus synthetic sheet insulation in a dual-layer blanket construction: 40 g/40 g polyester (100% recycled)
- Internal upper scrim is 100% polyester and features TILT, an aluminum coating that reflects body warmth to reduce radiant heat loss
- Triple-layer concertina blanket construction on upper for improved loft and warmth
- Elasticized internal quilting helps to draw insulation toward your body and eliminate cold spots
- Reduced-volume hood offers better heat retention
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 Rab 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 | 35 degrees (F) - ISO |
| Tested Comfort | 45 degrees (F) - ISO |
| Temperature Rating (F) | 35 degrees (F) |
| Temperature Rating (C) | 1.7 degrees (C) |
| Weight | 1 lb. 15 oz. |
| Shell | Nylon |
| Zipper Location | Left |
| Insulation Type | Synthetic |
| Fill | Stratus synthetic sheet recycled polyester |
| Sleeping Capacity | 1-person |
| Lining | Nylon |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 7.9 x 13.8 inches |
| Gender | Unisex |
| Sustainability | Contains recycled materials |