Questar™ 20F/-6C Sleeping Bag

  • Questar™ 20F/-6C Sleeping Bag
  • Questar™ 20F/-6C Sleeping Bag
  • Questar™ 20F/-6C Sleeping Bag
  • Questar™ 20F/-6C Sleeping Bag - Stuff Sack
  • Questar™ 20F/-6C Sleeping Bag
  • Questar™ 20F/-6C Sleeping Bag
  • Questar™ 20F/-6C Sleeping Bag
  • Questar™ 20F/-6C Sleeping Bag
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Therm-a-Rest

Questar™ 20F/-6C Sleeping Bag

Size
Size Chart
Dialed in for backpacking adventures, the fully-featured Questar delivers three-season comfort with 650 fill Nikwax Hydrophobic Down™.
  • 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: Removeable ultralight straps create a secure bag-to-sleeping pad connection that optimizes the comfort and thermal efficiency of your entire sleep system. SynergyLink Connectors function best with regular sized sleeping pads that are 3 inches thick or less when inflated.
  • Zoned Insulation: Maximizes warmth and saves weight by intentionally placing down where you need it most.
  • Box Baffled Construction: Uses mesh walls to maximize loft and minimize cold spots.
  • Toe-asis™ Foot Warmer Pocket: Baffled pocket of insulation rapidly warms cold feet.
  • 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 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
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Description

This is the field-proven, feature-packed down bag you've always wanted. We've loaded this bag with the comfort features that Therm-a-Rest bags are known for. Our SynergyLink™ Connectors integrate the bag with your sleeping pad while allowing our Zoned Insulation to keep fill where you need it most. The fit of the bag has been perfected in our onsite cold chamber to create our W.A.R.M. fit that allows room for multiple sleep positions without compromising thermal efficiency. Stuffed with water-resistant 650 fill Nikwax Hydrophobic Down certified by the Responsible Down Standard, the four-season Questar is ready for your next backcountry adventure. The Questar is offered in three sizes, and designed to fit both men and women. Compression sack and storage sack included.

Tech Specs

Small Regular Long
SKU 13155 13156 13157
Color Balsam Balsam Balsam
Weight (Standard) 1 lb 14 oz 2 lb 3 oz 2 lb 7 oz
Weight (Metric) 0.84 kg 0.99 kg 1.12 kg
Width (Standard) 29 in 31.5 in 33 in
Length (Standard) 73 in 80 in 85 in
Height (Standard) 4.5 in 4.5 in 4.5 in
Fits (Standard) 66 in 72 in 78 in
Fits (Metric) 168 cm 183 cm 198 cm
Girth Shoulder (Standard) 58 in 63 in 66 in
Girth Shoulder (Metric) 147 cm 160 cm 168 cm
Girth Hip (Standard) 58 in 61 in 64 in
Girth Hip (Metric) 147 cm 155 cm 163 cm
Girth Foot box (Standard) 44 in 46 in 51 in
Girth Foot box (Metric) 112 cm 117 cm 130 cm
Packed dimension (Standard) 7.5 x 9 7.5 x 9 7.5 x 9
Packed dimension (Metric) 19 x 23 19 x 23 19 x 23
EN Comfort (C) 0 C 0 C 0 C
EN Comfort (F) 32 F 32 F 32 F
EN Limit (C) -6 C -6 C -6 C
EN Limit (F) 20 F 20 F 20 F
EN Extreme (F) -9 F -9 F -9 F
EN Extreme (C) -23 C -23 C -23 C
Fill material 650 Fill Duck Nikwax Hydrophobic Down RDS 650 Fill Duck Nikwax Hydrophobic Down RDS 650 Fill Duck Nikwax Hydrophobic Down RDS
Fill weight (Standard) 1 lb 1 oz 1 lb 3 oz 1 lb 6 oz
Fill weight (Metric) 0.47 kg 0.54 kg 0.61 kg
Shell fabric 20D Polyester w/ DWR 20D Polyester w/ DWR 20D Polyester w/ DWR
Lining fabric 20D Polyester Taffeta 20D Polyester Taffeta 20D Polyester Taffeta
Country of Origin Made in China Made in China Made in China

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Shipping and Returns

Free Shipping on Orders over $50

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Orders Shipped in 1-2 Days

We do our best to get all orders out within one business day, Monday through Friday. Learn More

No Hassle Returns

We accept returns within 30 days of purchase. All returned items must be in new condition. Please be sure no dirt, grass or pet hair is on the item you are returning. Learn More

Limited Lifetime Warranty

Every piece of Therm-a-Rest gear is designed to endure the rigors of your time in the backcountry. We offer a Limited Lifetime Warranty on all products, except electronic devices, which have a 2-year Limited Warranty. Visit our Therm-a-Rest warranty page for more info.

Portrait of our repair shop crew

Overall rating: 4.3255816 / 5 from 43 reviews.

AI Generated Review Summary

The Questar™ 20F/-6C Sleeping Bag offers three-season comfort with a cozy foot box, smooth and versatile fabric, and reliable warmth for various temperatures. Customers appreciate its premium feel, though opinions on foot warmth vary.

Summary topics

  • Foot Box Comfort: 16%
  • Fabric Smoothness and Comfort: 13%
  • Nighttime Warmth and Versatility: 13%

Review topics: ["fit","straps","bag","length","quality","fabric","comfort","problem","feet","warmth","layer","feels","conditions","packs","price","features","night","foot","zippers","pad","socks","stay","surprise","baffles","thermarest","temps","tent","neoair","underwear","connect"].

Review highlights

  • "Toasty, cozy, packs small, love the extra fabric by the neck to keep cold air out." — Alison W.
  • "Perfect Companion for Chilly Nights!" — Farnoud N.
  • "The soft interior fabric is super comfy for those nights when minimal base-layering is needed." — Lance R.

Reviews

I'm Lovin it

"Really nice and comfortable. Soft premium feel. Plenty of space around the shoulders (even for a large dude). Didn't expect to love the footbox feature, but is really nice and gives you a extra aha feeling when going to bed. I like sthe sleeping pad straps. They help staying orientated and not falling of the sleeping pad during the night. I only two complaints: 1. Add a extra zipper on the inside of the sleeping bag to access the side pocket from both the inside and the outside making it a airlook. The you can store your earbuds and interact with thing on the outside without opening the sleeping bag. 2. Make the straps for the sleeping pad longer, they feel very tight for a wide sleeping pad (I have a NeoAir XLite NXT MAX) ."

— Erik B. (4/5)

Toe-asis is game changer

""Toe-asis" feature, which is like a sleeve to pop your toe into, is insanely amazinggggggg! Every bag should have this! I always have cold feet and this helped a lot! would love even more fluff where the bottom of your feet would be actually! just because the down moves sometimes. I'm a female who has cold feet if that helpful! Lovely feel to the bag. 650 fill, but feels higher quality honestly. LOVE IT!"

— Kayley (5/5)

Not as lofty or warm

"Not as lofty or warm as advertised. Was very cold at 5 degrees even with extra layers on."

— Jesse A. (2/5)

Most comfortable sleeping bag I’ve owned!

"Very comfortable sleeping bag. Great sleeping bag for side sleepers. Roomy and don’t feel restricted. This sleeping bag will keep you warm at 0 c, but you may want to consider a synthetic quilt or wear a down puffer jacket for cooler temperatures to keep warm."

— James W. (5/5)

Perfect Companion for Chilly Nights!

"I’ve been using the Questar™ 20F/-6C Sleeping Bag on several camping trips now, and it has exceeded my expectations every time. The warmth and comfort it provides, even in colder conditions, are impressive. The fit is cozy without feeling restrictive, and the materials feel high-quality and durable. One feature that stood out to me is the SynergyLink™ connectors, which kept the bag securely in place on my sleeping pad throughout the night, preventing any cold spots. I also appreciate the ThermoCapture™ lining that effectively reflects body heat, making this bag a true lifesaver on colder nights. Setting it up and packing it away is a breeze, and it compresses well for easy storage in my backpack. Whether I’m car camping or backpacking, this bag has become my go-to for any adventure where I need reliable warmth and comfort."

— Farnoud N. (5/5)

Very Comfortable Sleeping Bag

"The most comfortable sleeping bag I've ever owed! Roomy for a 6'2" guy who likes to sleep on his side."

— James W. (5/5)

READ the Temperature rating before leaving a review

"The COMFORT range on this sleeping bag is 32°F/0°C. So, that means that your average person will be comfortable at those temps. Simply put, this is a 3-season bag. If you're looking for a 4-season bag, then do your research and buy a bag that is a rated comfort level for subzero temps (Polar Ranger). This is an awesome bag for what it is designed to do. Don't buy a bag with clearly defined ratings, expecting it to perform differently... And then give it a poor review. I own 6 Therm-A-Rest sleeping bags and 2 quilts, and they all perform as rated. I do 95% of my camping in very cold temps and these bags have performed to standard."

— Rick (5/5)

Pretty good with room for improvement

"I like this bag very much, I used it for almost a year non-stop on a long-distance bike tour and was super comfortable in 99 % of the nights. I do have to say that it is losing a few feathers that are poking through the fabric and the downs are not perfectly distributed/ some light shining through in some places. In the colder nights (the coldest being around -4 °C) I did have to wear socks, thermo underpants and a fleece in order not to freeze. But since the comfort temp is stated at 0 °C and -6 °C is the limit, I think that's pretty fair. The fabric feels super soft and comfortable and I'm a huge fan of the Synergy Link Connectors. I used the bag with a Trail Pro mattress in regular size, but recently upgraded to a NeoAir XLite - unfortunately I didn't check the width of the Trail Pro (53 cm) and ordered a large XLite with 64 cm. The connectors are way too tight with this one and I'd be afraid to tear the bag if I slept in it with the wide mattress attached. I don't know why Thermarest doesn't offer longer straps as an aftermarket option, since it's a bit pointless to offer this kind of feature (which again, I'm a huge fan of in principle), but then make it incompatible with wider mattresses of their own product line."

— Benedikt (3/5)

Great backpacking bag

"Great lightweight down bag. Was warmer than expected and held up to its temp rating. It has a few more features than necessary but parts are removable. Lots of room inside for side sleepers like myself."

— Brian B. (4/5)

Great Bag for the Money

"This is a great three season bag for the price. I find it comfortable into the mid-twenties. It is light, compressible, and roomy for a side sleeper."

— Cj (5/5)

Q&A