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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 May 9, 2021. Stores' prices and availability are updated daily.

user rating: 5 of 5 (3)
Wenzel Lodgepole 40° - 50° Sleeping Bag
$28
user rating: 4.5 of 5 (4)
The North Face Wasatch 40
$109 - $118
user rating: 4 of 5 (2)
EMS Velocity 35
$140 - $146
user rating: 4 of 5 (1)
Therm-a-Rest Space Cowboy 45F
$130 - $159
user rating: 3 of 5 (1)
Marmot NanoWave 35
$89 - $104
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)
Mountain Hardwear Lamina Z Spark 34
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)
The North Face Dolomite 40F/4C
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)
Sierra Designs Forty Winks
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
Wenzel Monterey 30°-40° Hooded Sleeping Bag
$40 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 (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

Recent Warm Weather Synthetic Sleeping Bag Reviews

rated 4 of 5 stars
Wenzel Monterey 30°-40° Hooded Sleeping Bag

A good value sleeping bag that stays warm. Good for 2-3 seasons. For the price, this is a good bag. Well crafted, and very warm. The fleece inside is a nice touch making you feel instantly warm when you get inside. At 6 pounds this isn't going to be someone's backpacking bag, so Wenzel wisely went the other way adding features like a leverage loop on the stuff sack to help get the sleeping bag in and out, a big hood (great if you're a little claustrophobic in a smaller bag), elastic bands to keep… Full review

rated 5 of 5 stars
Wenzel Lodgepole 40° - 50° Sleeping Bag

High quality sleeping bag. The sleeping bag is comfortable, lightweight, and kept me warm. Full review

rated 5 of 5 stars
Wenzel Lodgepole 40° - 50° Sleeping Bag

I cannot tell you how happy I am to have this new sleeping bag! I’m now sleeping so much better while camping. I love having the extra room!! After sleeping in a mummy bag for a few years, I am So Excited to be back in comfort. I also love how soft the material is too.  Full review

rated 4.5 of 5 stars
Wenzel Lodgepole 40° - 50° Sleeping Bag

The Lodgepole's roomy, oversized fit will allow you to sprawl out while keeping you toasty between 40-50 degrees with its quick-warming brushed liner, cozy fleece collar, and fleece-lined footbox. I'm 5'3" and I am a stomach sleeper. I like to have a knee up and in this bag, I can actually put my knee up. This is the biggest plus about this sleeping bag. The fleece collar is great too. I used this in my camper with the ac on 66° so I was able to use it and not sweat to death. The zipper worked… Full review

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