How to Choose Sleeping Bags for Backpacking
Big Agnes Greystone 20 Sleeping Bag - Men's
$269.95
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Ideal for backpacking but versatile enough for couch surfing, the men's Big Agnes Greystone 20 sleeping bag is insulated with DownTek™ down and uses a baffle construction for superb warmth.
Key Details
Fill
600-fill-power DownTek down
Weight
Regular - Left Zip: 2 lbs. 4 oz.
Long - Left Zip: 2 lbs. 7 oz.
Compressed Volume
Regular - Left Zip: 8 liters
Long - Left Zip: 9.3 liters
Temperature Rating (F)
16 degrees (F)
- 600-fill-power DownTek down repels water while maintaining its insulating value
- Shell and lining fabrics feature a PFC-free water-repellent finish
- Traditional mummy shape allows for a light weight and increased thermal value
- Contoured hood follows the shape of your head for a more comfortable fit
- Low-profile cordlock lets you uncinch the hood with one hand
- Insulated tube along upper hood opening, oversize interior anti-draft collar and no-draft zipper garage work together to seal out drafts
- Anti-snag zipper enables a smooth, quick zip; 2-way zipper
- Includes liner loops for attaching a sleeping bag liner (not included)
- Mate together left and right zip bags
- Exterior loops let you hang the bag up to dry or for storage
- Includes a storage sack and stuff sack
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 Big Agnes 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 | 16 degrees (F) - ISO |
| Tested Comfort | 28 degrees (F) - ISO |
| Temperature Rating (F) | 16 degrees (F) |
| Temperature Rating (C) | -9 degrees (C) |
| Weight | Regular - Left Zip: 2 lbs. 4 oz. Long - Left Zip: 2 lbs. 7 oz. |
| Shell | Recycled 20-denier 400T polyester ripstop with PFAS-free water-repellent finish |
| Zipper Location | Left |
| Insulation Type | Down |
| Water-Resistant Down | Yes |
| Fill | 600-fill-power DownTek down |
| Fill Weight | Regular - Left Zip: 1 lb. 3 oz. Long - Left Zip: 1 lb. 5 oz. |
| Sleeping Capacity | 1-person |
| Lining | Recycled polyester taffeta with PFAS-free water-repellent finish |
| Sleeping Bag Shape | Mummy |
| Fits Up To (in.) | Regular - Left Zip: 72 inches Long - Left Zip: 78 inches |
| Shoulder Girth (in.) | Regular - Left Zip: 60 inches Long - Left Zip: 63 inches |
| Hip Girth (in.) | Regular - Left Zip: 54 inches Long - Left Zip: 57 inches |
| Stuff Sack Size | 9 x 20 inches |
| Stuff Sack Volume | 20.8 liters |
| Compressed Volume | Regular - Left Zip: 8 liters Long - Left Zip: 9.3 liters |
| Gender | Men's |
| Sustainability | Contains recycled materials Down certified to the Responsible Down Standard (RDS) |
Buying Advice
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shmichael_29
westborough MD
Great bang for your buck (and per pound)
1 year ago
First time with a Big Agnes bag. Bought this for a short wintertime AT hike because I knew my stuff was too heavy/not accurately temp rated. First night dipped down to just under 30, slept in my baselayers. Also used a 10 degree silk liner. Was mostly warm through the night, but definitely some coldness in the feet. Second night was VERY cold, dipped down to 15. I knew I'd have to use all the clothing I brought with me, and with that it was actually the warmest night of sleep I've ever had in the wintertime camping and it just happened to be on the coldest night I've had in wintertime camping. Couple of notables features: its lightness and packability are the best I've ever had out of a sleeping bag, strong zipper, excellent draft collar, easy to stuff into stuff sack, nice storage net bag thing, great feeling materials, and at the Long trim I can fit my entire body below the draft collar with the top of my head kind of like a plug. I'm 6'4, so I should be taller than most people who would be buying this. I'm a pretty warm sleeper, but this bag definitely has limits somewhere around 30-35º without needing any assistance, but with a warmer bag liner maybe slightly lower temps. I do wish there was slightly more down packed into the footbox to counter cold-footed sleepers like I am in the backcountry. Aside from pretty extreme conditions, this should be good for most hikers'/campers' purposes. It'll likely be my workhorse bag for coldweather camping (25 and up) until temps hit about 50º, then I'll switch over to a light quilt I have.
Age:25–34
Weight:200–225 lbs.
Height:6'4"
Yes , I recommend this product
Byron Samora
Horrible company
1 month ago
Never received item, they took my money, no customer support