3-Season Synthetic Sleeping Bags

Brands

ALPS Mountaineering
Mountain Hardwear
Wiggy's
Eureka!
REI
EMS
The North Face
Kelty
Downright
Marmot

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

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

Cascade Designs Therm-A-Nest

rated 5 of 5 stars This tragically discontinued "kid'tainer" is one of the most ingenious sleep systems ever invented for lightweight tent camping. Manufactured in 1993, this 1 lb. 9 oz. sleep system by the makers of Therm-a-Rest is a great option for parents who want to backpack with their little ones. The upper portion is basically a sleeping bag. The sheet-like lower portion forms a pocket for your 3/4 Therm-a-Rest mattress (not included). It is 34"x60" which fits a child up to 54" (about 10 yrs. old, 70 lbs.). Full review

Teton Sports Tracker +5°F

rated 4 of 5 stars Great cold weather sleeping bag. Nice compress-ability and the stuff sack is good. I purchased this sleeping bag to replace an older 0 degree synthetic from Eureka. This bag has a similar rating at +5 but compresses way smaller than the Eureka bag. The material of the outer shell is a nice durable ripstop nylon. The inner lining is different, it has a nice texture to it and isn't like most bags with the shiny nylon feel. There are zipper pullers inside and out to make the closing easier but the… Full review

Mountain Hardwear Crazy Legs 20°

rated 4.5 of 5 stars Mountain Hardwear eggplant Crazy Legs 20 degree left hand zipper mummy bag. I've had my eggplant left-hand MH 20 degree bag for about 15 years and though I've had to wash her like seven times (old roommate's cat puddled on it) she still keeps me warm in the PNW nights and compresses down and is super lightweight. Full review

Top-Rated 3-Season Synthetic Sleeping Bags

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ALPS Mountaineering Crescent Lake 20
user rating: 5 of 5 (4)
ALPS Mountaineering
Crescent Lake 20
$56
Mountain Hardwear Flip 25°/40°
user rating: 5 of 5 (3)
Mountain Hardwear
Flip 25°/40°
$103 - $139
Wiggy's Ultra Light
user rating: 4.5 of 5 (9)
Wiggy's
Ultra Light
$166
Mountain Hardwear Lamina 0°
user rating: 4.5 of 5 (9)
Mountain Hardwear
Lamina 0°
$168 - $300
Eureka! Wild Basin 0
user rating: 5 of 5 (2)
Eureka!
Wild Basin 0
$95
REI Polar Pod +25
user rating: 5 of 5 (2)
REI
Polar Pod +25
$51 - $100
Mountain Hardwear UltraLamina 15°
user rating: 4.5 of 5 (7)
Mountain Hardwear
UltraLamina 15°
$220 - $275
EMS Boreal 20
user rating: 4.5 of 5 (5)
EMS
Boreal 20
$169 - $209
The North Face Dolomite
user rating: 4.5 of 5 (3)
The North Face
Dolomite
$60 - $119
Kelty Light Year XP 20
user rating: 4.5 of 5 (3)
Kelty
Light Year XP 20
$100 - $109
ALPS Mountaineering Echo Lake 20
user rating: 5 of 5 (1)
ALPS Mountaineering
Echo Lake 20
$50 - $69
Downright Tundra
user rating: 5 of 5 (1)
Downright
Tundra
$39
Marmot Trestles 15
user rating: 4 of 5 (20)
Marmot
Trestles 15
$87 - $129
The North Face Aleutian 3S Bx
user rating: 4 of 5 (14)
The North Face
Aleutian 3S Bx
$79 - $119
Big Agnes Encampment 15°
user rating: 4 of 5 (14)
Big Agnes
Encampment 15°
$144 - $189
Wiggy's Super Light
user rating: 4 of 5 (12)
Wiggy's
Super Light
$191
Sierra Designs Wild Bill 20
user rating: 4 of 5 (9)
Sierra Designs
Wild Bill 20
$120
Marmot Trestles 30
user rating: 4 of 5 (7)
Marmot
Trestles 30
$79 - $109
Mountain Hardwear Lamina 20°
user rating: 4 of 5 (7)
Mountain Hardwear
Lamina 20°
$140 - $220
Eureka! Casper 15
user rating: 4 of 5 (5)
Eureka!
Casper 15
$90 - $109
Mountain Hardwear Pinole 20°
user rating: 4 of 5 (5)
Mountain Hardwear
Pinole 20°
$112 - $140
Eureka! Silver City 30ºF
user rating: 4 of 5 (3)
Eureka!
Silver City 30ºF
$80 - $99
Kelty Cosmic 20°
user rating: 4 of 5 (3)
Kelty
Cosmic 20°
$84 - $124
Marmot Trestles 0
user rating: 4 of 5 (3)
Marmot
Trestles 0
$111 - $149
Kelty Cosmic 0°
user rating: 4.5 of 5 (1)
Kelty
Cosmic 0°
$95 - $114
Eureka! Grasshopper 30
user rating: 4.5 of 5 (1)
Eureka!
Grasshopper 30
$34
Eureka! Kaycee 0ºF
user rating: 4.5 of 5 (1)
Eureka!
Kaycee 0ºF
$120 - $129
Marmot Cloudbreak 20
user rating: 4.5 of 5 (1)
Marmot
Cloudbreak 20
$198 - $209
ALPS Mountaineering Desert Pine 20
user rating: 4.5 of 5 (1)
ALPS Mountaineering
Desert Pine 20
$84
Marmot Merlin
user rating: 4 of 5 (1)
Marmot
Merlin
$126
The North Face Cat's Meow
user rating: 3.5 of 5 (67)
The North Face
Cat's Meow
$120 - $189
Kelty Mistral 20
user rating: 3.5 of 5 (6)
Kelty
Mistral 20
$60 - $99
Mountain Hardwear UltraLamina 32°
user rating: 3.5 of 5 (6)
Mountain Hardwear
UltraLamina 32°
$190 - $255
Big Agnes Hog Park 20°
user rating: 3.5 of 5 (3)
Big Agnes
Hog Park 20°
$136 - $339
Eagles Nest Outfitters Ember Underquilt
user rating: 3 of 5 (4)
Eagles Nest Outfitters
Ember Underquilt
3-Season Synthetic Sleeping Bag / Under Quilt
$131 - $174
Eureka! Cimarron 15
user rating: 3 of 5 (4)
Eureka!
Cimarron 15
$56
Slumberjack Latitude +20°F
user rating: 3 of 5 (2)
Slumberjack
Latitude +20°F
$49 - $74
ALPS Mountaineering Blue Springs 20
user rating: 3 of 5 (1)
ALPS Mountaineering
Blue Springs 20
$65 - $69
Kelty Mistral 0
user rating: 3 of 5 (1)
Kelty
Mistral 0
$88 - $99
Musuc Selk'Bag 4G Patagon
user rating: 2 of 5 (1)
Musuc
Selk'Bag 4G Patagon
$168
Therm-a-Rest Capella 20
user rating: 1.5 of 5 (1)
Therm-a-Rest
Capella 20
$200 - $209
Slumberjack Ultimate 20°
user rating: 1.5 of 5 (9)
Slumberjack
Ultimate 20°
$80
Mountain Hardwear Mountain Goat 20°
user rating: 5 of 5 (1)
Mountain Hardwear
Mountain Goat 20°
$92 - $115
EMS Solstice 20
EMS
Solstice 20
$89 - $109
Marmot Mavericks 30 Semi Rec
Marmot
Mavericks 30 Semi Rec
$85 - $109
Marmot Cloudbreak 30
Marmot
Cloudbreak 30
$169
Mountain Equipment Matrix III
Mountain Equipment
Matrix III
$231 - $379
Big Agnes Pristine 17
Big Agnes
Pristine 17
$160 - $209
Marmot Mavericks 20 Semi Rec
Marmot
Mavericks 20 Semi Rec
$89 - $119
The North Face Dolomite 20/-7
The North Face
Dolomite 20/-7
$99
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