How to Choose Sleeping Bags for Backpacking
Mountain Equipment Starlight II Sleeping Bag
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The Mountain Equipment Starlight III sleeping bag is a lightweight and highly efficient bag offering better compressibility for spring and summer use.
Shop similar productsKey Details
Fill
Polarloft
Weight
3 pounds
Temperature Rating (F)
28 degrees (F)
- Polarloft® insulation helps maintain warmth even while wet
- HELIUM™ 50-denier outer fabric is durable and comfortable
- Offset layer construction throughout
- Alpine fit maximizes thermal efficiency
- Anatomically shaped hood and footbox
- Full-length zip baffle and integrated collar
- Includes a lightweight compression sack
- 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 Mountain Equipment 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 | 28 degrees (F) - EN |
| Tested Comfort | 37 degrees (F) - EN |
| Temperature Rating (F) | 28 degrees (F) |
| Temperature Rating (C) | -2 degrees (C) |
| Weight | 3 pounds |
| Shell | HELIUM 50, 53 g/m2, 50-denier nylon |
| Zipper Location | Left |
| Insulation Type | Synthetic |
| Fill | Polarloft |
| Lining | Supersoft 30 ,49 g/m2, 30-denier nylon |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | 73 inches |
| Shoulder Girth (in.) | 60 inches |
| Hip Girth (in.) | 52 inches |
| Stuff Sack Size | 9 x 8 x 7 inches |
| Stuff Sack Volume | 14.3 liters |
| Gender | Unisex |
Buying Advice
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BenJ
Grand Lake, Colorado
Temp rating incorrect
2 years ago
This bag is rated for comfort down to around freezing temps (0 degrees Celsius is the claim on the bag itself). I just got out of the Rockies where temperatures were around 40 Fahrenheit and I was absolutely freezing, even when wearing the pants and heavier button-up I brought with me. Usually shopping REI sales is a rewarding prospect but I definitely learned my lesson: don't skimp on a sleeping bag.
Age:25–34
No, I do not recommend this product
Anonymous
4 years ago