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Therm-a-Rest

Therm-a-Rest Questar 0F/-18C Lightweight Down Mummy Sleeping Bag

  • Based on 50 reviews
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Style: Regular


Features

  • Nylon
  • Imported
  • The cold-weather winter sleeping bag in Therm-a-Rests top-rated and award-winning Questar line of warm and packable down backpacking bags
  • 650 fill Nikwax Hydrophobic Down absorbs 90% less water and dries 3 times faster without using dangerous PFCs
  • With Additional Room for Multiple positions (W.A.R.M.) fit means it allows for various natural sleep positions while maintaining thermal efficiency
  • SynergyLink Connectors integrate the bag with a pad for optimal efficiency and comfort; zoned Insulation maximizes warmth and saves weight
  • Regular left-zip bag measures 80x31.5x5.5 inches, fits heights up to 6 feet, packs to 8x10 inches, and weighs 2.69 pounds; storage sack and compression sack included

Description

Made for frigid backcountry conditions, the Therm-a-Rest Questar 0-Degree Lightweight Down Mummy Sleeping Bag offers comfort features like SynergyLink Connectors that integrate the bag with a sleeping pad while allowing Zoned Insulation to keep fill where it’s needed most. Perfected in Therm-a-Rest’s onsite cold chamber, the W.A.R.M. fit allows room for multiple sleep positions without compromising thermal efficiency. The 650 fill Nikwax Hydrophobic Down insulation, enclosed in 20D ripstop polyester with a durable water repellent finish, absorbs 40 percent less moisture and dries three times faster than untreated down, and can be retreated at home to maintain performance and loft. Mummy construction features a cinchable hood, insulated toe pocket, left side zipper and a zipper draft tube and draft collar keep out the cold. Designed to fit both men and women and available in three sizes: Small measures 73x29x5.5 inches, fits heights up to 5 foot 6 inches, and weighs 2.56 pounds; Regular measures 80x31.5x5.5 inches, fits heights up to 6 feet, and weighs 2.69 pounds; Long measures 85x33x5.5 inches, fits heights up to 6 feet 6 inches, and weighs 3.06 pounds. All sizes pack to 8x10 inches. Storage sack and compression sack included. Limited lifetime warranty.


Brand: Therm-a-Rest


Color: Balsam


Occupancy: 1 Person


Shape: Mummy


Seasons: All Seasons


Age Range (Description): Adult


Sport: Hunting, Climbing, camping_hiking, Mountaineering, Fishing


Special Feature: Lightweight


Material: Polyester


Fill Material: Down


Brand: ‎Therm-a-Rest


Color: ‎Balsam


Occupancy: ‎1 Person


Shape: ‎Mummy


Seasons: ‎All Seasons


Age Range (Description): ‎Adult


Sport: ‎Hunting, Climbing, camping_hiking, Mountaineering, Fishing


Special Feature: ‎Lightweight


Material: ‎Polyester


Fill Material: ‎Down


Product Dimensions: ‎80"L x 31.5"W


Closure Type: ‎Zipper


Item Weight: ‎3.25 Pounds


Outer Material: ‎Polyester


Fabric Type: ‎Nylon


Size: ‎Regular, 0-Degree


Maximum Height Recommendation: ‎77.95 Inches


Item Package Dimensions L x W x H: ‎21 x 12.44 x 10 inches


Package Weight: ‎1.52 Kilograms


Item Dimensions LxWxH: ‎80 x 31.5 x 3 inches


Brand Name: ‎Therm-a-Rest


Warranty Description: ‎limited lifetime manufacturer


Model Name: ‎Therm-a-Rest Questar Lightweight Down Mummy Sleeping Bag


Suggested Users: ‎unisex-adult


Number of Items: ‎1


Manufacturer: ‎Cascade Designs Inc.


Part Number: ‎


Style: ‎Regular


Included Components: ‎Sleeping Bag


Fill Material Type: ‎Down


Date First Available: December 13, 2019


Frequently asked questions

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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Good stuff with the good price
Style: Long
I had a night in Yosemite, sleeping on my hammock. The weather was 40 Fahrenheit and I had one of the most enjoyable sleeps on the hammock. It's well-made and light. I recommend buying it.
Reviewed in the United States on August 14, 2023 by Ali
    • Initial thoughts.
Style: Long
I just got this sleeping bag today. Here are my initial thoughts. Pros: 1. Super light 2. Long, perfect for my height. 3. Super warm. I tried it out in my bedroom and I was starting to sweat after just a few minutes. 4. Packable. Cons: 1. Can't fit my arms into the bag, and zip it up because its not wide enough. I'm a big a tall guy. I have wide shoulders, whether or not if I am skinny of fat. 2. Cost: Why do packable sleeping bags cost so much money (at least for me.) Overall it's the best one for the price...so far. There are other big and tall sleeping bags, however they are not packable, and weigh a ton. I'm not an ultralight weenie by any stretch (I'm too big and tall for ultralight gear anyway.) I am working on shaving some weight off, though. I don't want to be lugging a 100 lbs. backpack on the trail. Hiking and backpacking companies, make products that fit someone who's 5'5-5'8" and weigh a 150 lbs. Big and tall men also like to hike and backpack. We all can't be emaciated vegans. Anywho, this sleeping bag might work for me, though I'll have to leave my arms out when I sleep in it. Therma-rest seems to be catching on, though they still have some work to do. If you all want overweight people to get out and move, maybe you should make products that fit them properly. ... show more
Reviewed in the United States on June 29, 2023 by Grizzly907LA
    • Toasty 😍
Style: Regular
I have Raynauds and my feet get super cold at night when I'm backpacking. This bag is the most incredible combo of warm and lightweight. And it never feels... damp like some quilts and bags I've used. Highly recommend.
Reviewed in the United States on March 4, 2023 by Amazon Customer
    • Very comfortable and keeps me warm
Style: Long
I have been really impressed with this sleeping bag. It's just spacious enough for me to be able to bend my legs separately, which is very important for the way I am most comfortable sleeping. It's also super warm; I've used it as cold as the upper 20s F and was still too warm when all zipped up. It also doesn't twist around on me during the night, because it has the straps that hold it in place on my mattress. The material is silky and soft against my skin. I don't dread being awake half of the night now when camping, as I sleep almost as well in this as in my own bed. ... show more
Reviewed in the United States on April 24, 2021 by J. A. Grim
    • Well used and dirty
Style: Regular
This was a returned item but I didn’t expect it to arrive dirty, including long black hair with a hole in the sack. It was definitely taken on some long trips and should not have been resold.
Reviewed in the United States on May 27, 2023 by Patricia Alred
    • Very warm and conformable
Style: Long
I tested this in the White Cloud Mountains at 9,500 feet in late May. The over night temperatures got down below 20F. I slept on this with a Big Agnes mattress and was warm all night long. I even unzipped a the bag for a while when I 1st when to bed. The straps on the bag prevented the air mattress from slipping out from under the bag when I rolled around. Best night sleep backpacking ever. ... show more
Reviewed in the United States on June 8, 2021 by Samuel J Coffland
    • Awesome!
Style: Regular
I've tried several sleeping bags before i finally run into this one, light wait, very comfortable/wide, warm... Love it.
Reviewed in the United States on July 19, 2022 by Nenad Bijelic
    • Good bag
Style: Regular
Spent two weeks backpack camping all over Colorado this summer. Couple nights temps reached 30 degrees. Stayed nice and warm. I do recommend a decent pad for underneath to optimize warmth and comfort. Comes with two storage bags. Stuff sack for hiking, and a storage bag.
Reviewed in the United States on July 7, 2021 by Mark Parshall

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