How to Choose Sleeping Bags for Backpacking

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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.
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| 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) |
| 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 |
| Sleeping Capacity | 1-person |
| Lining | Recycled polyester taffeta with PFAS-free water-repellent finish |
| Sleeping Bag Shape | Mummy |
| Stuff Sack Size | 9 x 20 inches |
| Stuff Sack Volume | 20.8 liters |
| Gender | Men's |
| Sustainability | Contains recycled materials Down certified to the Responsible Down Standard (RDS) |
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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.
I've been enjoying the nights I've used the Greystone so far. It's been a long winter here in Utah so the early spring trips have been colder than normal. I've been happy with the performance of the bag so far. I have used a liner when it's got into the 20's overnight to help me be warmer. This bag is best I think as a comfort rating more closely to freezing and warmer. I like the design and the fabrics and the ease of getting in an out. For the price point, BA definitely has a great option here.
Just finished a 3 day gravel ride in the Blue Ridge Mountains in Virginia. Glad I had it! Had two cold nights camping and was plenty warm. I am 6'5" 195lbs, and had plenty of room. Only issue was figuring out zipper when I unzipped too far, but figured it out. Had it strapped to handle bars in light weight dry bag, pack down small and was plenty light.
Use this in my role as Scoutmaster. Absolutely love it. Look forward all day to climbing into this bag and shutting it down. Coziest I have ever been.
Never received item, they took my money, no customer support