Warm Weather Down Sleeping Bags

The best warm weather down sleeping bags, reviewed and curated by the Trailspace community. The latest review was added on June 30, 2019. Stores' prices and availability are updated daily.

Recent Warm Weather Down Sleeping Bag Reviews

rated 5 of 5 stars
Sea to Summit Traveller TrI 50°F

Enables me to go with a 40-liter pack for four days and three nights in summer. With this bag, I can get my summer sleep/shelter system down to around 4 1/2 pounds. The bag compressed (15 oz) in its Ultra sil compression sack (blue) on left with a Sea to Summit Ultralight Pillow (2 oz) in the sack also. Next to it is the Marmot Tungsten UL 1  (pole bag, tent body, fly in an ultra sil (yellow) and stake bag (2 lbs 9 oz), and the Nemo Tensor mummy sleeping pad in it's stuff sack (15 oz) on the far… Full review

rated 4.5 of 5 stars
Big Agnes Horse Thief SL 35°

Love this thing. I've had this for several years with use along the lakeshore of Pictured Rocks and temps in high 30's. I wish they still made this bag so I could buy it for my kids now that they are backpacking also. To answer a couple of questions that may resolve issues posted up years earlier than this one: The pillow sack goes inside with you, not hanging off the edge. I believe some of the cold feeling people may be getting is from not using an insulated air mattress; I made that mistake also… Full review

rated 3.5 of 5 stars
Big Agnes McKinnis

The Big Agnes McKinnis is a lightweight, down insulated sleeping bag designed for minimalist trips, bike packing, or any time some extra insulation is needed within your sleep system. Versatile enough to go from your warm weather summer bag to a winter liner, I believe the McKinnis would be an excellent addition to many people's kits. The main point I’d like to see redesigned is the hood shape as it currently doesn’t add much function. WARMTH No temperature rating is given for the McKinnis so… Full review

rated 4 of 5 stars
Sierra Designs Backcountry Bed 700 / 35 Degree

Well made, but not for me. I'm up and down numerous times during the night. Received one as a warranty replacement for a failed Zissou 700 and returned for credit the next day. Though it's warm and roomy I found it a chore to get in and out of. I'm up numerous times during the night and in and out is a bothersome challenge. Because the blanket is sewn in at waist level one must slide in the legs to hip level and squiggle down and exiting is the opposite. I couldn't bear it, so I returned it and… Full review

rated 3.5 of 5 stars
Etowah Outfitters 50 Degree Down Sleeping Bag

An inexpensive, lightweight, rectangular, summerweight bag that can open up to work as a quilt for two. Too bad it doesn't come in long. I sleep warm. In tents, huts, and European hotels (where bedding usually consists of a bottom sheet and a quilt in a quilt cover—that's all), I have suffered through many a night under a quilt or in a sleeping bag that is too warm, sometimes waking up soaked in sweat while others seem to be perfectly comfortable in the same or even more insulation. My wife, not… Full review

rated 2.5 of 5 stars
Marmot Aspen 40 Ultralight

The bag is rated at 40 degrees, works pretty good to that temp. It's very lightweight at 1.5 lbs. It's a good summer bag! I bought this bag last summer and used it in warmer nights than its specified 40 degree temp, so used it as a quilt just laid over me at night. It's very lightweight at 1 1/2 lbs and stuffs into a compression stuff sack. It's filled with Polarguard and compresses very well to the size of a soccer ball, so takes up very little room in my backpack or bike panniers. It's a very… Full review

rated 4 of 5 stars
Big Agnes Horse Thief SL 35°

A lightweight hoodless option that lightens the load in your summer pack. Recommended for weather where the temps hover around or above 50°F. Warmth: The bag is rated at 35°F. The bag does a fine job in temperatures above 50°F. Mid 40's and below, the comfort level starts to drop off quick. In temperate climates, like the one here in Minnesota, you can judge the weather well enough to make a pretty good estimate of whether you'll be in comfort range.  Fit and Comfort: I must say, the bag is… Full review

rated 4 of 5 stars
Mountain Hardwear Ratio 45

Very good warm weather bag. It packs down small, and has good loft for a lightweight summer bag. The zipper only allows it to be used as a quilt for one, as it doesn't extend to the bottom of the bag. Purchased this bag deeply discounted at $100; the regular retails for $199 and the long for $219. As of June 2017 it is still available with big discounts on many websites. I sleep warm, so this bag allows me to sleep comfortably down to 40 degrees in wool 150 weight base layer shirt and long johns. Full review

rated 3.5 of 5 stars
Mountain Equipment Men's Glacier 500

One of Mountain Equipment's all rounder sleeping bags designed to tackle a wide range of conditions. It does what is says on the tin, keeps you warm when it is cold, however it does have a few drawbacks that would make me consider going for something else. Lets start with the basics.  With an extreme temperature rating of -21 degrees Celsius/ -6 degrees F, Comfort rating of 2 degrees Celsius/ 36 degrees F and a "Good nights sleep rating of -8 degrees Celsius/ 18 degrees F. This bag is going to… Full review

user rating: 5 of 5 (3)
Western Mountaineering Caribou MF
$85 - $375
user rating: 5 of 5 (2)
Sea to Summit Micro MC II
$369
user rating: 4.5 of 5 (7)
Western Mountaineering HighLite
$340 - $360
user rating: 4.5 of 5 (3)
Western Mountaineering MityLite
$370 - $390
user rating: 5 of 5 (1)
Western Mountaineering Everlite 45
$300 - $320
user rating: 4 of 5 (2)
Sea to Summit Traveller TrI 50°F
$199 - $258
user rating: 4 of 5 (1)
Marmot Always Summer
$140 - $209
user rating: 4 of 5 (1)
Sea to Summit Spark SP I
$229 - $318
user rating: 4 of 5 (1)
Sierra Designs Backcountry Bed 700 / 35 Degree
$280 - $299
user rating: 3.5 of 5 (1)
Big Agnes McKinnis
$140
Sierra Designs Nitro Quilt 800 / 35 Degree Top Quilt / Down
$250
user rating: 5 of 5 (4)
Marmot Atom
$279 MSRP
user rating: 5 of 5 (3)
REI Travel Down +45
user rating: 5 of 5 (2)
Sierra Designs Mobile Mummy 800 2-Season
$330 MSRP
user rating: 4.5 of 5 (3)
MontBell U.L. Super Spiral Down Hugger #5
$244 MSRP
 
user rating: 5 of 5 (1)
Cabela's Boundary Waters 40
user rating: 5 of 5 (1)
Sierra Designs Wicked Light 45
$220 MSRP
user rating: 5 of 5 (1)
Kelty Coromell Down 40
user rating: 4 of 5 (3)
Marmot Aspen 40 Ultralight
user rating: 4.5 of 5 (1)
Montane Minimus Sleeping Bag
user rating: 4 of 5 (2)
Cumulus Panyam 450
user rating: 4 of 5 (2)
Mountain Hardwear Phantom 45°
$250 MSRP
user rating: 4 of 5 (2)
Therm-a-Rest Ventra Down Comforter Warm Weather Down Sleeping Bag / Top Quilt
$200 MSRP
user rating: 4 of 5 (1)
L.L.Bean Goose Down Sleeping Bag Semi-Rectangular 35F
user rating: 4 of 5 (1)
MontBell Super Spiral Down Hugger #5
$199 MSRP
user rating: 4 of 5 (1)
Mountain Hardwear Ratio 45
user rating: 4 of 5 (1)
Lafuma TMB 40
 
user rating: 3.5 of 5 (2)
PHD Minimus
user rating: 3.5 of 5 (1)
Mountain Equipment Glacier 500
user rating: 3.5 of 5 (1)
Etowah Outfitters 50 Degree Down Sleeping Bag
$79 MSRP
user rating: 3 of 5 (7)
Big Agnes Horse Thief SL 35°
$370 MSRP
user rating: 2.5 of 5 (1)
MontBell Alpine Burrow Bag Thermal Sheet
$99 MSRP
 
user rating: 5 of 5 (3)
Western Mountaineering Iroquois
discontinued
user rating: 5 of 5 (3)
GoLite Feather-Lite Bag
$250 MSRP
discontinued
user rating: 5 of 5 (2)
Mountain Hardwear Down Upgrade
discontinued
user rating: 5 of 5 (2)
REI Kilo Flash +40
discontinued
user rating: 4.5 of 5 (4)
MontBell U.L. Super Stretch Down Hugger #4
discontinued
user rating: 5 of 5 (1)
Big Agnes Yampa 40°
discontinued
 
user rating: 5 of 5 (1)
Moonstone 800 Zone 1 Ultralight
discontinued
user rating: 5 of 5 (1)
Sierra Designs Wicked Fastbag
discontinued
user rating: 5 of 5 (1)
Marmot Sierra 40
discontinued
user rating: 4 of 5 (3)
Lafuma One Kilo
discontinued
user rating: 4 of 5 (1)
Kelty Galactic 50
discontinued
user rating: 4 of 5 (1)
MontBell U.L. Super Stretch Down Hugger #5
discontinued
 
user rating: 4 of 5 (1)
Campmor 45° rectangular
discontinued
user rating: 4 of 5 (1)
MontBell U.L. Alpine Down Hugger Thermal Sheets
discontinued
user rating: 3.5 of 5 (5)
Lafuma Warm'n Light 600
discontinued

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