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Last updated January 1st, 2020
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The Therm-a-Rest Questar 0 Sleeping Bag is a warm down insulated bag designed for cold-weather backpacking and year-round adventures at high elevations. The expanded mummy bag shape offers a spacious fit that's comfortable in any sleeping position and great for those with broad shoulders. The 650-fill down is treated with Nikwax for greater loft retention and performance in damp conditions. Removable Synergylink connectors create an integrated, thermally efficient system with your sleeping pad.
The Therm-a-Rest Questar 0 Sleeping Bag is a warm down insulated bag designed for cold-weather backpacking and year-round adventures at high elevations. The expanded mummy bag shape offers a spacious fit that's comfortable in any sleeping position and great for those with broad shoulders. The 650-fill down is treated with Nikwax for greater loft retention and performance in damp conditions. Removable Synergylink connectors create an integrated, thermally efficient system with your sleeping pad.
FEATURES of the Therm-a-Rest Questar 0 Sleeping Bag
650 Fill nikwax hydrophobic down: Absorbs 90% less water and dries 3 times faster without using dangerous pfcs
W.A.R.M. Fit: With additional room for multiple positions (W.A.R.M.) fit means this bag allows for various natural sleep positions while maintaining thermal efficiency
SynergyLink connectors: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility
Zoned insulation: Maximizes warmth and saves weight by intentionally placing fill where you need it most
Box baffled construction: Uses mesh walls to maximize loft and minimize cold spots
Toe-asis foot warmer pocket: Ergonomic toe box that rapidly warms cold feet in a pocket of warm down
Quilt and blanket loops: Customize your sleep system by layering our quilts or tech blankets for increased warmth
Responsible down standard certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely
Additional features: Heat-trapping draft collar, full-length zipper draft tube, snag-free zipper, cinchable hood and external zip pocket
Compression sack and storage sack included
Fabric Details
Shell: 20D Polyester with DWR
Lining: 20D polyester taffeta
Product Specifications
Minimum Temperature Rating:
0 Degrees Fahrenheit
Features:
Insulated, Compression
Sustainability:
Responsible Down Standard
Shell Fabric:
20D Polyester w/ DWR
Bag Weight (Short):
41 oz
Bag Weight (Regular):
43 oz
Bag Weight (Long):
49 oz
Packed Dimensions:
8 x 10 in.
Sleeping Bag Lining:
20D Polyester Taffeta
Fill Weight (Short):
26 oz
Fill Weight (Regular):
29 oz.
Fill Weight (Long):
31 oz.
Shoulder Circumference (Short):
58 in.
Max User Height (Short):
66 in.
Max User Height (Long):
78 in.
Hip Circumference (Short):
58 in.
Foot Circumference (Short):
44 in.
Foot Circumference (Regular):
46 in.
Foot Circumference (Long):
51 in.
Shoulder Circumference (Regular):
63 in.
Hip Circumference (Regular):
61 in.
Shoulder Circumference (Long):
66 in.
Hip Circumference (Long):
64 in.
Certification(s):
Responsible Down Standard
Product Technology:
Responsible Down Standard
Disclaimer:
We only ship this brand to US Addresses.
Gender:
Mens
Best Use:
Winter Camping
Insulation:
Down
Temperature Rating:
11 - 20 Degrees Fahrenheit
Exact Temperature Rating:
14 Degrees Fahrenheit
Sleeping Bag Shape:
Mummy
Max User Height (Regular):
72 in.
Fill Details:
650 Fill Nikwax Hydrophobic Down
Responsible Down Standard
The Responsible Down Standard helps make sure the down and feathers used in your products are only taken from humanely treated animals. Consumers purchasing products with this certification can be ensured the ducks and geese are not subjected to unnecessary harm.
Rated 2 out of
5 by
Leonie from
Not warm enough for its ratingI purchased this bag to upgrade from a -7 synthetic bag, since I was in the market for something warmer than -7.
I also purchased the NeoAir XTherm. I have taken it on numerous hiking trips and have found that If the temperature drops below 0C, I am uncomfortably cold.
I have tried using it with liners but I would not consider this bag to have a comfort rating of -10C.
Overall, the sleeping bag packs down to a small size, the material feels nice against the skin, and its light weight.
Date published: 2022-08-01
Rated 5 out of
5 by
April M. from
Comfortable and warmPlenty of space to move around and decently warm (I've used it only up to 7C). Not sure it will handle when I go to the arctic this summer, but I'm hopeful! Packs down super small and is also light. Only wish the blue was the outside colour instead of the green!
Date published: 2022-06-21
Rated 4 out of
5 by
Michael K. from
GoodI had used this bag for an overnight in the Pinchot State Forest in PA. The lowest temperature was 20F with some wind chill that brought it near the bags labeled comfort rating of 15F. I used a MSR Access 1 tent (winter rated). My sleep pad system was the NeoAir XTherm Sleeping Pad (R 6.9) combined with a Z Lite SOL Sleeping Pad (R 2.0), which provided a robust R 8.9. This sleeping pad system coupled with a 0F extreme rating should have proved sufficient. However, in spite of the aforementioned system and wearing merino wool base layer (socks, pants, shirt, and face covering), I woke up at 2am shivering. Good thing I brought with me a winter sleeping bag insert. Once deployed, I never slept better.
While it advertises the ability “roll around” for those restless sleepers, which it did, it did have some consequences - the snap and zipper would always come undone and cinch hole would cover mouth. These issues were enhanced by the sleeping pad straps, which ironically allowed for the movement.
Overall, if used wisely with appropriate gear, this bag is sufficient and comfortable. Do I regret this purchase - NO! I happy to have this in my backpacking arsenal.
Date published: 2022-03-27
Rated 5 out of
5 by
John W. from
Nice and cozyThis bag has kept me nice and cozy through some chilly PNW nights. Overnight temperatures in the Pacific Northwest in fall, winter, and spring rarely dip below freezing. I have used this bag in the mid 30s and it has kept me warm. I am usually cold when sleeping so I use a bag with a lower rating than the outside temperature.
Date published: 2022-03-07
Rated 3 out of
5 by
Ryan G. from
Really great design but just not that warm for its ratingI bought this bag to replace an older 0 degree sleeping bag that I have. My old bag has seen over 200 nights of use and has lost a lot of down and loft, so I was looking for a new bag to replace it. Long story short, after trying out this questar bag backpacking, to me it actually felt less warm than my very used old 0 degree bag. I’m a very cold sleeper so when it’s 20 degrees out I still sleep in long johns and a down jacket and pants in my bag, but despite that with this bag I was still cold. Ultimately warmth feels like the absolute top priority in a bag and I don’t feel like this bag met that requirement.
That being said I loved:
-how light it is
- the straps to secure it to the sleeping pad
- the non-stick zipper
- the baffles around the neck to keep warm air from getting out
- how soft the bag feels
- that you get a large storage stuff sack along with the compression stuff sack that you can use to store the bag properly at home
So yeah overall I’d say really great design it just seems like it could use some more down. Maybe my old 0 degree bag was exceptionally warm and was not a good benchmark, but compared to that bag, this questar was not as warm.
Date published: 2021-12-19
Rated 5 out of
5 by
Mcgowape from
Light. Warm. Bring on the Action!I've been searching for a bag to bring on a an Everest Base Camp trek in 2022, and I think I found the one! It's light and toasty, and it was on sale (even better!). Can't wait to try it out.
Date published: 2021-12-11
Rated 5 out of
5 by
Anonymous from
GénialAprès beaucoup d'essais de sacs, j'ai trouvé le top : confort en largeur et longueur,douceur, chaleur, légèreté...un vrai bonheur
Date published: 2021-12-11
Rated 5 out of
5 by
Abe G from
Buy itI slept in this bag last weekend 15-20f, kept me nice and toasty. I purchased the long and had plenty of room to roll around inside the bag.