3-Season Synthetic Sleeping Bags

Brands

Ajungilak
Alpine Design
ALPS Mountaineering
Big Agnes
Black Pine Sports
Campus
Cascade Designs
Chinook
Coleman
Columbia

Genders

Unisex
Men's
Women's
Kids'
Boys'
Girls'

Price

less than $50
$50 - $99.99
$100 - $199.99
$200 - $299.99
$300 - $399.99
$400 and above

Recent 3-Season Synthetic Sleeping Bag Reviews

Kelty Men's Mistral 20

rated 4.5 of 5 stars A great bag, at a great price. Very warm. I bought this bag from Sierra Trading with the deal flyer discount, and it came in under $100. A very nice bag. I pack it in a large Alps Mountaineering compression bag. One of two long 20 degree bags I own. The other is the Marmot Sorcerer. This is the nicer bag. Full review

Moonstone Optima

rated 5 of 5 stars I stumbled onto the Moonstone brand at a "high-end" outfitter in 1990 in Boston, Mass. I have the Optima Long and Maxima Long bags, with snap-in liner. The latter is used mostly in New England winters; the former in spring and fall cool weather. My Optima is showing its age with a couple rips on the zipper baffle this fall. Hardly a cold night in either bag. Too bad to hear, now years later, about the closure of Moonstone.  I have been convinced more than once about the value of synthetic bags… Full review

Mountain Hardwear Men's UltraLamina 15°

rated 3 of 5 stars Warm and quite confortable overall, but with some design flaws! And a zipper at risk! This bag has felt warm and comfortable, with enough room and a nice feeling in contact with body. It has stayed this way in a variety of conditions, even with light rain, and heavy condensation. (But I have not tried it yet anywhere near its low temperature range.) All of this is very important! At the same time I felt there are some important flaws: The bag has turned out to be both bigger and heavier than stated… Full review

Marmot Women's Trestles 15

rated 4 of 5 stars Works great, stays warm, even when partially wet. Heavy and bulky for backcountry, which is enough inconvenience for the star deduction. Synthetic, it's got the pros of warmth, even when it gets moisture. And let's be honest, warmth is more important when its below freezing, and worth carrying about 3 more lbs than most down bags that keep you as warm in the same temps. But that's just it, if you can afford to carry less, then good for you—a down bag especially one of those new water resistant… Full review

Slumberjack Esplanade +20ºF

rated 4 of 5 stars The style and construction is great, however I wish it would compress more than it does. Very lightweight. The collar feature is great. I have slept in 40 degree weather in just a tee shirt and shorts and was actually too warm. Had to unzip! Great bag for camping trips, but not suitable for fitting in to a backpack for more than three-night hiking trips. Full review

Marmot Cloudbreak 20

rated 4.5 of 5 stars I would recommend this bag for friends. Good bag that stays nice and warm. Stays warm all night and has a good drawstring. Perfect length for me 6'. Stays pretty dry in the stuff sack.& I use it in a tent so I'm not sure how well it would do for dew. Stuff sack is nice and tuff and it stuffs to a pretty compact size. This pack seems very well made. Marmot did a great job. I would get this pack again if I had a choice. Full review

Mountain Hardwear Pinole 20°

rated 5 of 5 stars Great bag for the budget backpacker. Compresses well for a 20deg synthetic, and keeps me warm down to rated temp! My son and I needed a couple of packable, cold weather bags for backpacking with his Scout Troop.  Considering budgeting for outfitting us both with packs, bags, sleeping pads, and miscellaneous gear, we were looking at less expensive bags. Throw in that we're in the Southeast, where humidity and rain are always in the possibilities, down bags didn't make sense, either. I put some research… Full review

Therm-a-Rest Capella 20

rated 1.5 of 5 stars Bulkier than expected. Overpriced. Way overpriced. "System" of two stretch bands to secure to same brand of matched sleeping pad fails. I slid off every night, finding hip or shoulder on ground. Bag slides OFF the pad length-wise — down off the foot of the pad, too. Too hot for temps in 40-50s. Comes with a simple stuff sack, should have a compression sack. I bought one and it compressed the bag to at least 1/2 of the provided stuff sack. The bag was too bulky otherwise. Despite being made for… Full review

Mountain Hardwear Men's UltraLamina 32°

rated 4 of 5 stars Light, packable. I love this bag. I used it for a 5-night trip to Clear Creek in the Grand Canyon. The coldest night was about 38 degrees. I wore several layers most nights as the temp was low 40s high 30s, and I wasn't freezing. The thing I love most is how small and light it packs. Carrying everything around for 6 days, it's the weight and room it takes in my pack that matters, and this bag is excellent in both regards. I guess it could be warmer near the temp rating, but having researched bag… Full review

Top-Rated 3-Season Synthetic Sleeping Bags

Sort by: name | rating | price | availability | recently reviewed

 
user rating: 4 of 5 (4)
Ajungilak Kompakt
 
user rating: 3.5 of 5 (1)
Alpine Design 20 Degree Sleeping Bag
ALPS Mountaineering Alpine Lake 0
user rating: 5 of 5 (1)
ALPS Mountaineering Alpine Lake 0
discontinued
ALPS Mountaineering Alpine Lake 20
user rating: 5 of 5 (1)
ALPS Mountaineering Alpine Lake 20
discontinued
ALPS Mountaineering Blue Mountain 20
user rating: 4 of 5 (1)
ALPS Mountaineering Blue Mountain 20
discontinued
ALPS Mountaineering Blue Springs 20
user rating: 3 of 5 (1)
ALPS Mountaineering Blue Springs 20
ALPS Mountaineering Clearwater 20
user rating: 1 of 5 (1)
ALPS Mountaineering Clearwater 20
$100 MSRP
ALPS Mountaineering Crater Lake 0
ALPS Mountaineering Crater Lake 0
$95 MSRP
ALPS Mountaineering Crater Lake 20
ALPS Mountaineering Crater Lake 20
$66
ALPS Mountaineering Crescent Lake 0
ALPS Mountaineering Crescent Lake 0
$90 MSRP
ALPS Mountaineering Crescent Lake 20
user rating: 5 of 5 (4)
ALPS Mountaineering Crescent Lake 20
$45
ALPS Mountaineering Desert Pine 0
user rating: 5 of 5 (1)
ALPS Mountaineering Desert Pine 0
$110 MSRP
ALPS Mountaineering Desert Pine 20
user rating: 4.5 of 5 (1)
ALPS Mountaineering Desert Pine 20
$84
ALPS Mountaineering Diamondback +0
ALPS Mountaineering Diamondback +0
ALPS Mountaineering Diamondback +15
ALPS Mountaineering Diamondback +15
ALPS Mountaineering Diamondback +30
user rating: 4.5 of 5 (1)
ALPS Mountaineering Diamondback +30
ALPS Mountaineering Double-Wide
ALPS Mountaineering Double-Wide
$190 MSRP
ALPS Mountaineering Echo Lake 0
ALPS Mountaineering Echo Lake 0
ALPS Mountaineering Echo Lake 20
user rating: 5 of 5 (1)
ALPS Mountaineering Echo Lake 20
 
user rating: 5 of 5 (1)
ALPS Mountaineering Monarch Pass 20
discontinued
 
user rating: 5 of 5 (2)
ALPS Mountaineering Silver Springs 20
discontinued
 
ALPS Mountaineering Twin Peak 20
$140
Big Agnes Bald Mountain 18
Big Agnes Bald Mountain 18
$142 - $151
Big Agnes Beeler Gulch SL
Big Agnes Beeler Gulch SL
$180
Big Agnes Betty SL
Big Agnes Betty SL
$124 - $129
Big Agnes Big Creek 30°
Big Agnes Big Creek 30°
$180 - $239
Big Agnes Brooklyn
Big Agnes Brooklyn
$142 - $189
Big Agnes Cabin Creek 15°
Big Agnes Cabin Creek 15°
$216 - $269
Big Agnes Dream Island 15°
Big Agnes Dream Island 15°
$220
Big Agnes Encampment 15°
user rating: 4 of 5 (14)
Big Agnes Encampment 15°
$120 - $189
Big Agnes Farwell 0°
Big Agnes Farwell 0°
$150 - $209
Big Agnes Gem Lake Sleeping Bag, Mummy 15°
Big Agnes Gem Lake Sleeping Bag, Mummy 15°
$160 - $182
Big Agnes Gem Shoestring SL Sleeping Bag, Mummy 15°
Big Agnes Gem Shoestring SL Sleeping Bag, Mummy 15°
$156 - $175
Big Agnes Gunn Creek 30°
Big Agnes Gunn Creek 30°
$120 - $159
Big Agnes Haybro
Big Agnes Haybro
$120
Big Agnes Hog Park 20°
user rating: 3.5 of 5 (3)
Big Agnes Hog Park 20°
$127 - $271
Big Agnes Lily
Big Agnes Lily
Big Agnes Little Red 15°
Big Agnes Little Red 15°
$55 - $99
Big Agnes Lulu 15°
Big Agnes Lulu 15°
$127 - $179
Big Agnes Moon Hill 26
Big Agnes Moon Hill 26
$127 - $135
Big Agnes Pristine 17
Big Agnes Pristine 17
$157 - $159
Big Agnes Shoestring SL
Big Agnes Shoestring SL
$146
Big Agnes Slavonia 30°
Big Agnes Slavonia 30°
$112 - $149
Big Agnes Whiskey Park 0°
Big Agnes Whiskey Park 0°
$144 - $179
Big Agnes Wind Lip 28
Big Agnes Wind Lip 28
$127 - $189
Big Agnes Wolverine 15°
Big Agnes Wolverine 15°
$88 - $109
 
user rating: 3 of 5 (1)
Black Pine Sports Graystar Mummy +20
 
user rating: 4 of 5 (1)
Campus Adventure
 
user rating: 4 of 5 (2)
Cascade Designs Therm-A-Nest
Chinook Sportster Hooded Tapered 23F
user rating: 3.5 of 5 (1)
Chinook Sportster Hooded Tapered 23F
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