3-Season Down Sleeping Bags

The best 3-season down sleeping bags, reviewed and curated by the Trailspace community. The latest review was added on May 23, 2019. Stores' prices and availability are updated daily.

Recent 3-Season Down Sleeping Bag Reviews

The North Face Dolomite Double Down 20F/-7C

rated 5 of 5 stars Roominess, warmth, possibility for snuggling. Late May Algonquin Park trip. It was my wife's idea to change it up from individual bags to one, double bag. I was skeptical. May in the park can see overnight temps close to freezing and I always associated double bags with fair-weather, car campers. I was wrong. Quite wrong. Not only did this bag keep us both warm, it offered more flexibility in sleeping position and actually lowered the overall weight/bulk of our pack (canoe camping). Full review

Therm-a-Rest Parsec 20F

rated 5 of 5 stars A super warm sleeping bag with some unique features and qualities. I actually won this sleeping bag in a Trailspace competition, so thanks, Trailspace and Therm-a-Rest. I wanted to put this bag to the test before I wrote a review. The good news is that I am super satisfied with this bag. I have four other sleeping bags (some synthetic, some down) to which I can compare this bag. I've used this bag backpacking in Canyonlands NP in sub 20 degree weather. In Guadalupe NP in sub 30 degree weather. In… Full review

Klymit KSB 0 Down

rated 5 of 5 stars This is a very comfortable, warm bag. It is very stretchy, which makes it ideal for people like me who don't sleep like logs. I would recommend it for any season, given the weather isn't too extreme. I got this bag in December, and so far I have been able to use it several times in high altitude, snowy conditions (in Colorado). I haven't had a chance to use it in summer weather yet. So far, it's kept me nice and warm and given me some nice sleep. The bag is really stretchy, which is great. I don't… Full review

Sierra Designs Cloud 800/20 Degree

rated 5 of 5 stars Excellent zipperless women's bag. Truly feels like you're sleeping inside of a nice, warm cloud. I finally got to try this bag out this past weekend on the Buffalo River Trail in Arkansas.  The temperatures at night ranged from around 45-55° so I wasn't truly able to test the warmth of the bag. I found no drafts in the bag, except if you don't put your feet in the right way, they slide out of the footbox in the slot. The length was perfect for me (5'6") and it fits like a standard mummy bag. I… Full review

Marmot Teton

rated 4.5 of 5 stars Astonishingly good for the weight and pack size. Astonishingly good for the weight and pack size. Kept me warm down to the coldest of British temperatures. Furthermore, weight is very low and sat alongside my other lightweight gear very efficiently. Used in the Lake District for several nights with barely any problems whatsoever. Did get a little wet on day 3 though, some of its efficiency was temporarily lost, but when the sun came out I was able to dry it fairly quickly during a lunch break. Full review

Sierra Designs Cloud 800 / 20 Degree

rated 4.5 of 5 stars One of the best option for a warm and light sleeping bag. I was really skeptical with the zipper-less design of the bag but it proved to be a non-issue. It's quite a warm bag but I'm generally a warm sleeper so I may not the be the best gauge for that, but it seems to do the job well in that regard. The fit is excellent with lots of room to move about. I would classify it as a wider than normal mummy bag. I'm 6' tall and the fit is perfect. The added foot vents are a nice touch when you need to… Full review

Katabatic Gear Alsek

rated 5 of 5 stars The Katabatic Gear Alsek is the most comfortable and functional quilt that I have used. It is well-designed, durable, and conservative in its temperature rating, such that it really stands out amongst the competition. It has exceeded my expectations for warmth, comfort, and reliability. *I listed the origin of my quilt as a Pro and the expense as a Con, understanding that they are directly related. When I purchased my quilt in May 2016, all production was done in the USA. Katabatic Gear now offers… Full review

NEMO Disco 30

rated 5 of 5 stars It’s comfortable, stayed warm when camping in the 20s. Packs up nice and small. Perfect for backpacking. Have taken this bag on extended backpacking trips and it met all my needs. Kept me warm even when it was in the 20s. It was lightweight in my backpack and always fluffed up nicely when I took it out of the stuff bag. Love the shape as it gave me extra wiggle room. The foot box gave me extra warmth right where I needed it. Full review

Feathered Friends Swift

rated 5 of 5 stars I purchased this Swift at the FF store across from REI about 1998. The Swift is light, compresses well, and holds up to a great deal of abuse. It has kept me comfortably warm down to its published temp range of 20° F with only a base layer inside a homemade liner. I definitely recommend it for PCT section hikers from Oregon North to Manning Park; as well as weekend or holiday treks where you may encounter wet/cold conditions. DESCRIPTION AND PURPOSE This is a Swift, serial number 95448, 800 fill… Full review

user rating: 5 of 5 (12)
Western Mountaineering MegaLite
$470
user rating: 5 of 5 (7)
Western Mountaineering VersaLite
$590
user rating: 5 of 5 (4)
Western Mountaineering Apache MF
$550 - $565
user rating: 5 of 5 (4)
Marmot Lithium
$374 - $519
user rating: 5 of 5 (4)
Valandré Shocking Blue
$540 - $692
user rating: 5 of 5 (3)
Marmot Angel Fire
$167 - $299
user rating: 5 of 5 (3)
Big Agnes Ethel 0°
$225 - $263
user rating: 4.5 of 5 (19)
Big Agnes Lost Ranger 15°
$200 - $299
user rating: 4.5 of 5 (18)
Kelty Cosmic 20
$111 - $169
user rating: 4.5 of 5 (8)
Marmot Never Summer
$209 - $298
user rating: 5 of 5 (2)
NEMO Disco 30
$195 - $259
user rating: 5 of 5 (2)
Big Agnes Fish Hawk 30°
$180 - $183
user rating: 5 of 5 (2)
Mountain Hardwear Ratio 15
$210 - $224
user rating: 4.5 of 5 (7)
Mountain Hardwear Spectre SL 20°
$371
user rating: 4.5 of 5 (5)
Marmot Teton
$195 - $299
user rating: 4.5 of 5 (4)
Mountain Hardwear Phantom 0°
$465 - $720
user rating: 4.5 of 5 (4)
Sierra Designs Backcountry Bed 600 / 30 Degree
$250
user rating: 4.5 of 5 (4)
Western Mountaineering AlpinLite
$570 - $615
user rating: 4.5 of 5 (3)
Kelty Cosmic 0
$172 - $239
user rating: 4.5 of 5 (3)
REI Igneo 25
$269
user rating: 4.5 of 5 (2)
Sierra Designs Cloud 800 / 20 Degree
$247 - $329
user rating: 5 of 5 (1)
Rab Ascent 500
$199 - $274
user rating: 5 of 5 (1)
Klymit KSB 0 Down
$225 - $239
user rating: 5 of 5 (1)
Marmot Phase 30
$293 - $399
user rating: 5 of 5 (1)
Western Mountaineering Tamarak
$285
user rating: 5 of 5 (1)
Rab Neutrino 400
$250 - $399
user rating: 5 of 5 (1)
Sierra Designs Nitro 800 / 20 Degree
$270 - $359
user rating: 5 of 5 (1)
Sea to Summit Trek TK II
$224 - $339
user rating: 5 of 5 (1)
Western Mountaineering Sycamore MF
$495 - $515
user rating: 5 of 5 (1)
The North Face Dolomite Double Down 20F/-7C
$209 - $279
user rating: 5 of 5 (1)
Therm-a-Rest Parsec 20F
$285 - $379
user rating: 5 of 5 (1)
Big Agnes Summit Park 15
$247 - $329
user rating: 5 of 5 (1)
NEMO Rhumba 15
$137 - $279
user rating: 5 of 5 (1)
Sierra Designs Cloud 800/20 Degree
$247 - $329
user rating: 5 of 5 (1)
Western Mountaineering Antelope MF
$625
user rating: 4 of 5 (26)
Marmot Sawtooth 15
$167 - $278
user rating: 4 of 5 (20)
The North Face Blue Kazoo
$210 - $309
user rating: 4 of 5 (20)
Marmot Helium
$299 - $419
user rating: 4 of 5 (10)
Marmot Hydrogen
$244 - $349
user rating: 4 of 5 (8)
Marmot Never Winter
$139 - $249
user rating: 4 of 5 (8)
Western Mountaineering UltraLite
$510
user rating: 4 of 5 (7)
Mountain Hardwear Phantom 15°
$390
user rating: 4 of 5 (6)
Western Mountaineering SummerLite
$405 - $410
user rating: 4 of 5 (3)
The North Face Gold Kazoo
$179 - $239
user rating: 4.5 of 5 (1)
Big Agnes Storm King 0°
$280
user rating: 4.5 of 5 (1)
Sierra Designs Nitro 800 / 0 Degree
$315 - $419
user rating: 4.5 of 5 (1)
Western Mountaineering Antelope GWS
$745
user rating: 4 of 5 (1)
Valandré Mirage
$432
user rating: 4 of 5 (1)
Rab Ascent 700
$236 - $314
user rating: 4 of 5 (1)
Rab Neutrino Endurance 600
$535
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