3-Season Synthetic Sleeping Bags

Brands

Therm-a-Rest
Mountain Hardwear
Moonstone
Kelty
Eureka!
REI
Alpine Design
Wiggy's
ALPS Mountaineering
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

Therm-a-Rest Saros

rated 2.5 of 5 stars I got this bag for an AT section hike. It was very comfortable at first and worked well with the Therm-a-Rest Prolite Plus. I did find it irritating that the bag was so warm that most nights I could not sleep in it zipped up. The zip did not go all the way down to feet. Zipper broke and that was that. Backless weight saving idea not so sure about either, made it hard to use independently without the sleeping pad. I am getting a replacement sent from the company, the Capella women's bag. We will… Full review

Mountain Hardwear Laminina Z Flame

rated 4 of 5 stars If you can afford just one bag, and need a bag that "does most" — consider the Lamina/Lamina Z Flame. While this bag is not for gram-weenies, it is a great mid-range, mid-cost bag that hits a really great sweet spot for wet and 3-season use. This bag also has among the most features, lowest cost, and warmth rating in its class. Overall Specs The unisex version of the Lamina Z Flame bag is rated down to 22 degrees Fahrenheit for the EN lower limit and 32 degrees Fahrenheit for the EN comfort… Full review

Moonstone Optima

rated 3 of 5 stars I was cold at Camp Verde, AZ, campground in February and the zipper snagged the nylon backing. Good for spring camping in dry weather at Havasupai Falls Campground with no tent. I decided to take advantage of a late winter snow fall one February and skied at the Flagstaff Sno-bowl. I drove to a Camp Verde camp ground that night and would sleep in the back of my S.U.V. I found myself so cold that I was starting the engine frequently to heat up the truck. At some point the zipper snagged the backing… Full review

Kelty Tuck 20 / EN 22

rated 4 of 5 stars Great bag at a great price. Just received it. I also own the Kelty Mistral 20 degree bag. The Tuck is 11 ounces lighter, and compresses to fit in a Kelty medium compression sack. The Mistral compresses down to fit in a large compression sack. The Tuck is listed as a 22 degree bag, not a 20. Has a zipper about six inches from the end of the bag—with the zipper open, you can have your feet out of and on top of the bag. Full review

Eureka! Women's Casper 15

rated 2 of 5 stars If you're a tallish or largish woman like me (5'8", size XL), you probably won't fit inside. I bought this for backpacking, as it is fairly small and light, but it didn't work for me. I couldn't fit in this bag. Granted, I'm 5'8", so at the upper limit of their height range, but sticking out the end wasn't the only problem. I wear a women's XL, so I'm definitely bigger, but still within straight clothing sizes...but I couldn't zip it up with my arms inside. I was cold as expected, but it was way… Full review

REI Nooksack UL +10

rated 3.5 of 5 stars For a 10°F synthetic bag, it packs down very well (8.5 x 11), it's comfortable, and zips well. From my experience it's not a 10°F bag. I was cold in this bag at 40°F with thermals on. This is one of the most inaccurate bag ratings I've tested out of dozens. If the bag read 35°F I would consider this a great bag. Everything about the bag is positive but I would feel terrible if someone actually depended on this bag in 20-30's°.  If you buy this bag as a summer bag, I think you will be very… Full review

REI Shasta +15

rated 2 of 5 stars Though the bag is made of quality materials, it does not pack down well and lets out heat around the collar. The bag is a decent car camping summer bag but does not do well in cooler weather. I tested it last night (low 36°F). Since the bag had a 15° rating, I figured comfort rating would be somewhere around 30°. I cinched the hood and collar until there was only a 4" diameter circle. There's not really a collar to cinch. The draft tube extends from the side of the bag in one continuous run that… Full review

Mountain Hardwear Men's Lamina 20°

rated 4 of 5 stars Is my go-to bag for a couple of seasons now for some good reasons... but the ZIPPER! I have a love/hate relationship with this bag. It has been my favorite synthetic bag I've owned. It presses down to 8 x 10. It's super silky comfortable. It has a great shape. The collar holds heat well. the compression sack is a really nice 3 strap/1clip design so you can unclip one strap and pull the lid back. The bag has a small pocket.  The zipper sticks HORRIBLY! Every 3-5 inches it sticks if you are trying… Full review

Alpine Design 20 Degree Sleeping Bag

rated 1.5 of 5 stars Don't buy this. The stuffing rips out easily and the zipper broke just after a few months in light use. Without the zipper the bag is useless. They need to put more money into the zipper! Don't buy. Full review

Top-Rated 3-Season Synthetic Sleeping Bags

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

user rating: 2.5 of 5 (1)
Therm-a-Rest Saros reviewed Jun 27, 2015
$130 - $199
user rating: 4 of 5 (1)
Mountain Hardwear Laminina Z Flame reviewed Jun 26, 2015
$199
 
user rating: 4.5 of 5 (4)
Moonstone Optima reviewed May 24, 2015
discontinued
user rating: 4 of 5 (1)
Kelty Tuck 20 / EN 22 reviewed May 21, 2015
$80 - $99
user rating: 4 of 5 (6)
Eureka! Casper 15 reviewed Apr 16, 2015
$74 - $109
user rating: 4 of 5 (2)
REI Nooksack UL +10 reviewed Apr 13, 2015
discontinued
user rating: 2 of 5 (1)
REI Shasta +15 reviewed Apr 11, 2015
discontinued
user rating: 4 of 5 (8)
Mountain Hardwear Lamina 20° reviewed Apr 11, 2015
$145 - $220
user rating: 2.5 of 5 (2)
Alpine Design 20 Degree Sleeping Bag reviewed Mar 26, 2015
user rating: 3 of 5 (2)
Wiggy's Sleeping Bag reviewed Feb 6, 2015
user rating: 5 of 5 (1)
Wiggy's Hunter Super Lt reviewed Jan 13, 2015
$275 MSRP
user rating: 4.5 of 5 (2)
ALPS Mountaineering Desert Pine 20 reviewed Jan 12, 2015
$65
user rating: 4.5 of 5 (5)
ALPS Mountaineering Crescent Lake 20 reviewed Nov 30, 2014
$80 MSRP
user rating: 3.5 of 5 (7)
Kelty Mistral 20 reviewed Nov 16, 2014
$60 - $89
user rating: 4 of 5 (8)
Mountain Hardwear UltraLamina 15° reviewed Oct 31, 2014
$205 MSRP
user rating: 4 of 5 (21)
Marmot Trestles 15 reviewed Feb 3, 2015
$86 - $129
user rating: 4 of 5 (2)
Slumberjack Esplanade +20ºF reviewed Oct 2, 2014
$80 MSRP
user rating: 4.5 of 5 (1)
Marmot Cloudbreak 20 reviewed Sep 24, 2014
$199
user rating: 4 of 5 (5)
Mountain Hardwear Pinole 20° reviewed Aug 14, 2014
$85 - $104
user rating: 1.5 of 5 (1)
Therm-a-Rest Capella 20 reviewed Jul 3, 2014
$130 - $199
 
user rating: 4 of 5 (2)
Cascade Designs Therm-A-Nest reviewed Jun 18, 2014
user rating: 4 of 5 (1)
Teton Sports Tracker +5°F reviewed Jun 10, 2014
 
user rating: 4.5 of 5 (6)
Mountain Hardwear Crazy Legs 20° reviewed May 23, 2014
discontinued
user rating: 3.5 of 5 (67)
The North Face Cat's Meow reviewed Apr 3, 2014
$124 - $199
user rating: 4.5 of 5 (1)
Eureka! Kaycee 0ºF reviewed Mar 26, 2014
$75 - $97
user rating: 3.5 of 5 (6)
REI Zephyr +15 reviewed Mar 24, 2014
discontinued
 
user rating: 3.5 of 5 (5)
Ledge Featherlite +20 reviewed Mar 12, 2014
user rating: 4.5 of 5 (9)
Wiggy's Ultra Light reviewed Feb 22, 2014
$200
 
user rating: 3 of 5 (6)
Storm Shield X-1100 reviewed Jan 20, 2014
discontinued
user rating: 5 of 5 (1)
Jack Wolfskin Touch the Clouds reviewed Jan 9, 2014
discontinued
user rating: 2 of 5 (1)
Musuc Selk'Bag 4G Patagon reviewed Nov 10, 2013
$199
user rating: 4.5 of 5 (1)
REI Zephyr +20 reviewed Sep 19, 2013
user rating: 4.5 of 5 (9)
Mountain Hardwear Lamina 0° reviewed Sep 12, 2013
$155 - $300
user rating: 3.5 of 5 (3)
Big Agnes Hog Park 20° reviewed Aug 9, 2013
$170 - $349
user rating: 3.5 of 5 (4)
The North Face Bighorn reviewed Jul 22, 2013
discontinued
user rating: 4.5 of 5 (1)
ALPS Mountaineering Diamondback +30 reviewed Jul 16, 2013
user rating: 4 of 5 (1)
The North Face Blaze 20 reviewed Jul 16, 2013
discontinued
user rating: 3 of 5 (1)
ALPS Mountaineering Blue Springs 20 reviewed Jun 27, 2013
user rating: 4 of 5 (14)
Big Agnes Encampment 15° reviewed Jun 20, 2013
$170 - $189
user rating: 3 of 5 (2)
MontBell Super Spiral Burrow Bag #3 reviewed Jun 17, 2013
$159 MSRP
user rating: 5 of 5 (2)
REI Polar Pod +25 reviewed Jun 11, 2013
$100
user rating: 5 of 5 (1)
ALPS Mountaineering Echo Lake 20 reviewed May 30, 2013
$50 - $69
 
user rating: 4 of 5 (1)
Musuc Selk' Bag 3G reviewed Apr 25, 2013
user rating: 4.5 of 5 (3)
Kelty Light Year XP 20 reviewed Apr 7, 2013
$100 - $109
user rating: 3.5 of 5 (1)
Chinook Sportster Hooded Tapered 23F reviewed Apr 3, 2013
 
user rating: 4 of 5 (2)
Ledge Featherlite 0 reviewed Apr 1, 2013
user rating: 4 of 5 (3)
Marmot Trestles 0 reviewed Mar 11, 2013
$139 - $159
user rating: 3 of 5 (12)
Slumberjack Super Guide +30°F reviewed Mar 10, 2013
discontinued
user rating: 4.5 of 5 (1)
High Peak Summit 20 reviewed Feb 25, 2013
user rating: 5 of 5 (1)
Mountain Hardwear Mountain Goat 20° reviewed Feb 23, 2013
$70 - $114
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