How to Choose Sleeping Bags for Camping
Sierra Designs Synthesis 20 Sleeping Bag - Long
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Ultralight performance with an ultralight price tag! The Sierra Designs Synthesis 20 sleeping bag in a long length packs light but hits heavy with its feature set.
Shop similar productsKey Details
Fill
Synthetic
Weight
2 lbs. 12 oz.
Temperature Rating (F)
20 degrees (F)
- SierraLoft synthetic insulation provides lightweight warmth
- Dual zipper system makes getting in and out a breeze, and gives you room to move about
- Patented self-sealing foot vent provides fast and easy ventilation
- Draft dodger collar helps prevent drafts
- 20-denier ripstop nylon fabric is lightweight and compressible
- Closeout
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 Sierra Designs Camping 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 | Camping |
|---|---|
| Tested Lower Limit | 20 degrees (F) - ISO |
| Tested Comfort | 31 degrees (F) - ISO |
| Temperature Rating (F) | 20 degrees (F) |
| Temperature Rating (C) | -6.6 degrees (C) |
| Weight | 2 lbs. 12 oz. |
| Ultralight | Yes |
| Shell | 20-denier ripstop nylon |
| Zipper Location | Left |
| Insulation Type | Synthetic |
| Fill | Synthetic |
| Fill Weight | 1 lb. 15.2 oz. |
| Lining | 20-denier nylon taffeta |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | 78 inches |
| Shoulder Girth (in.) | 64 inches |
| Hip Girth (in.) | 58 inches |
| Stuff Sack Size | 15 x 7.5 inches |
| Stuff Sack Volume | 12.9 liters |
| Gender | Unisex |
