Warm Weather Synthetic Sleeping Bags

The best warm weather synthetic sleeping bags, reviewed and curated by the Trailspace community. The latest review was added on June 20, 2019. Stores' prices and availability are updated daily.

Recent Warm Weather Synthetic Sleeping Bag Reviews

rated 5 of 5 stars
Alpine Design 45-degree Micro Lite Mesa Rec Bag

Great addition to one's warm weather gear kit. $4 at Amvets seconds store. Tried to find Alpine Design on net, nothing! Used with no clothing to 45° F.; works well. With base layer, would go much lower.  Wondering what the fabric and materials used are? The insulation factor is pretty good, must be some kind of fabric magic at work. Wonder what Alpine Design has to say about that? Anyone know how to locate that company? Full review

rated 4 of 5 stars
Therm-a-Rest Space Cowboy 45F

The Space Cowboy is a nicely featured 45˚F/7˚C sleeping bag for those seeking a highly compressible, lightweight synthetic sleeping bag option. This bag is readily stuffed into pack crevices or its supplied stuff sack, taking up less room at lower weight than a number of similarly rated bags (albeit at higher price), while providing mummy bag coziness with a draft tube and draft collar for unseasonably cool nights. In the American South where I live, we’ve had the first few flashes of summer-like… Full review

rated 0.5 of 5 stars
Ozark Trail Sleeping Bag

This is the most sh*t sleeping bag I have ever used in my life. There is absolutely no way to fix the damn chain. Ozark Trail, make better sleeping bags! Full review

rated 3 of 5 stars
Marmot NanoWave 35

Well built. Great for summer nights but not for cold weather. I am a Florida hiker/backpacker. I am one of those people northerners laugh at because I wear winter jackets when the weather reaches 65°F and below. Knowing my blood is thinner and I have my own internal insulation (weighing in at 150 lbs), I was hoping this bag would keep me warm. Although this bag is rated to 35°F, I was cooly uncomfortable at 52°F and below. On all occasions where the weather dipped below 55°, I packed wool pajamas,… Full review

rated 5 of 5 stars
Deuter DreamLite 500

Sweet, durable, comfortable, holds up to its ratings very well. If you don't have one, prioritize getting your Dreamlite. I truly love mine. For the guy with the cord issue, I thought the exact thing. Even considered sliding barrel lock up to perfecto tying a knot and cutting the extra off. But on one trip someone took my backpack. Luckily all my gear and sacks were in the tent with me. Man, figuring out how to lug my gear back out the trail without my backpack was a lot of trial by error and I… Full review

rated 4 of 5 stars
Sierra Designs Forty Winks

Good well-rounded synthetic bag. Medium weight, medium packed size, medium warmth, and durable. This was my first sleeping bag I ever bought, purchased in 2001. I have been happy with the bag, and I think it is a good bag in all categories.  It is not a very lightweight bag, nor does it pack down very small, but it's a mid-priced synthetic bag and I think it is everything that it's supposed to be. Overall I've been pleased with it as a general purpose, well-built bag. Since then I almost always… Full review

rated 4.5 of 5 stars
CRAZO Premium Hooded Envelope Sleeping Bag

This is a well-built envelope sleeping bag with mummy hood which is good for most three-season camping. The extra long and large size (86.6" x 31.5" ) assures comfort for adults even up to 6'11", and it allows you to use a liner or wear extra clothes to be warmer if it might get colder than the rating. As a retailer of this sleeping bag, I'd tested it several times with my friends before I placed the order. I have to say that I really love this sleeping bag. Honestly, I don’t like the narrowness… Full review

rated 2.5 of 5 stars
Deuter DreamLite 500

A very cold sleeping bag, far out of its rating. This bag seemed like the perfect bag for my needs—a spring sleeping bag, highly compressible and lightweight, from a reliable tested brand. Unfortunately it fails in the only thing that really matters—warmth, big time. I used it while camping in a tent with a 15 mm E.V.A. mattress. I'll admit I'm a cold sleeper, but it has to be a night of 20+°C for it to be warm enough!!! And at those temperatures I can use a thermal liner that weighs a third… Full review

rated 5 of 5 stars
Mountain Hardwear Lamina Z Spark 34

This is a great all-round three-season sleeping bag. It's comfort rated down to 34°f, and compresses really well. The outer shell is waterproof, and even though it is a mummy style sleeping bag there is plenty of room inside to move around and get comfortable. The Mountain Hardwear Lamina Z Spark sleeping bag is a 3-season sleeping bag that is comfort rated down to a temperature of 34°f/1°c.  I have used this on several trips with temperatures dropping as low as 3°c, and felt no chills at all… Full review

user rating: 5 of 5 (1)
Mountain Hardwear Lamina Z Spark 34
$119 - $133
user rating: 4 of 5 (2)
The North Face Dolomite 40F/4C
$63
user rating: 4 of 5 (1)
Sierra Designs Forty Winks
$115
user rating: 4 of 5 (1)
Therm-a-Rest Space Cowboy 45F
$129 - $159
user rating: 3 of 5 (1)
Marmot NanoWave 35
$89 - $99
user rating: 5 of 5 (5)
Ferrino H.L. Micro
user rating: 5 of 5 (2)
Alpine Design 45-degree Micro Lite Mesa Rec Bag
$30 MSRP
 
user rating: 4.5 of 5 (3)
The Backside Backsider X-Fibre 35
user rating: 4.5 of 5 (3)
Mountain Hardwear Lamina 45°
$120 MSRP
user rating: 4.5 of 5 (3)
Mountain Hardwear Lamina 35°
$140 MSRP
user rating: 5 of 5 (1)
Sierra Designs Backcountry Bed Duo SYN 1.5-Season
user rating: 5 of 5 (1)
High Peak Sirius
user rating: 4 of 5 (3)
Deuter DreamLite 500
$95 MSRP
user rating: 4.5 of 5 (1)
Marmot Mavericks 40 Semi Rec
$75 MSRP
user rating: 4.5 of 5 (1)
MontBell Super Spiral Burrow Bag #5
$139 MSRP
user rating: 4 of 5 (2)
Columbia Reactor 35 Mummy
user rating: 4 of 5 (2)
EMS Velocity 35
$189 MSRP
user rating: 4 of 5 (1)
Wiggy's Desert
$152 MSRP
user rating: 4 of 5 (1)
Kelty Light Year XP 40
$110 MSRP
user rating: 4 of 5 (1)
VauDe Snow Cloud 350 43F
user rating: 4 of 5 (1)
Peregrine Saker 35
 
user rating: 4 of 5 (1)
Alpine Design Microlite Terrain 45 Degree Mummy
user rating: 4 of 5 (1)
Outbound Bike & Hike +44°
user rating: 3.5 of 5 (1)
Mountain Hardwear Switch 35°
$120 MSRP
CRAZO Premium Hooded Envelope Sleeping Bag
$70 MSRP
user rating: 2.5 of 5 (3)
REI Travel Sack +55
 
user rating: 2 of 5 (7)
Ozark Trail Sleeping Bag
$16 MSRP
user rating: 5 of 5 (4)
Marmot Trails
discontinued
user rating: 5 of 5 (2)
Lafuma Patrol Light
discontinued
user rating: 4.5 of 5 (4)
Mountain Hardwear X-Country 40
discontinued
 
user rating: 4.5 of 5 (4)
The North Face Tourlight 3D
discontinued
user rating: 4.5 of 5 (4)
The North Face Wasatch 40
$69 MSRP
discontinued
user rating: 4.5 of 5 (3)
Lafuma Extreme 600
discontinued
 
user rating: 4 of 5 (8)
Coleman Bambusa
discontinued
user rating: 4 of 5 (7)
The North Face Windstorm 3D
discontinued
user rating: 4 of 5 (5)
Slumberjack Tour Lite +40°F
discontinued
user rating: 4 of 5 (3)
Big Agnes Lost Dog 50°
discontinued
user rating: 4.5 of 5 (1)
The North Face Propel
discontinued
user rating: 4 of 5 (2)
Kelty Stratus 35
discontinued
 
user rating: 4 of 5 (1)
MontBell Twilight
discontinued
user rating: 4 of 5 (1)
Exped Wallcreeper PL 133g
discontinued
user rating: 4 of 5 (1)
High Peak E-Z Pak 1000
discontinued
user rating: 4 of 5 (1)
Lafuma X600
discontinued
user rating: 4 of 5 (1)
Selk'bag Selk Bag 1
discontinued
user rating: 4 of 5 (1)
Selk'bag 3G
discontinued
user rating: 3.5 of 5 (12)
Marmot Pounder
discontinued
user rating: 2 of 5 (1)
Selk'bag 4G Patagon
$259 MSRP
discontinued
 
user rating: 2 of 5 (6)
Storm Shield X-700
discontinued

In order to show you the most useful information, we have omitted some unreviewed products. View the complete product list »