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Hyke & Byke Quandary 15°F Cold Weather Mummy Hiking & Backpacking Sleeping Bag - Duck Down 650 FP 3 Season Sleeping Bags for Adults - Ultralight with Compression Stuff Sack

4.5 4.5 out of 5 stars 1,123 ratings

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About this item

  • Inner and outer nylon shell with horizontal baffles that allow the adjustment of the 650 fill power insulation to move where the fill is needed the most.
  • 15 Degree Sleeping Bag - The Quandary mummy sleeping bag is packed with naturally hydrophobic and warmth-trapping Duck Down equal to 650 Fill Power. Incredible compressability and exceptional warmth. Fully baffled construction with no sewn-through areas to eliminate cold spots
  • Save Space & Shave Weight - This 3 Season fall and winter sleeping bag is professionally designed for thru-hiking, backpacking and camping in temperatures down to 15 degrees Fahrenheit. The Quandary cold weather sleeping bag boasts a superior warmth-to-weight ratio at only 2.89 lbs. (Regular Size)
  • Hydrophobic & Water-resistant - The 400T 20D ripstop nylon liner is coated with water repellant DWR, and the superior YKK zippers are also more water-resistant than typical zippers
  • Camping Sleeping Bags - Uses a differential cut and fill to get the most warmth-trapping down to the most important parts of the bag. Includes an internal storage pocket and a compression stuff sack that packs your Quandary compact sleeping bag down to just 11 inches long and 7.5 inches in diameter
  • Hyke & Byke Sleeping Bags - USA-based brand offers a collection of premium quality camping accessories and gear suitable for adults and children alike for all your adventures in the Great Outdoors

Additional Details

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From the brand


Product Description

A man standing in a Hyke & Byke sleeping bad on location in a northern climate.

Outdoor Gear That Eliminates Poverty

Hyke & Byke was founded on the principle of extending the wilderness to everyone through providing quality products, that we ourselves use, affordably. Ultralight backpacking, bouldering, peak bagging, and camping are hobbies, a mindset, and a way of life that we want to share with everyone.

Choose the Right Three-Season (15°F) Sleeping Bag for You

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Antero 15°F

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Crestone 15°F

Customer Reviews
4.5 out of 5 stars
1,123
4.5 out of 5 stars
652
4.3 out of 5 stars
264
4.4 out of 5 stars
96
4.4 out of 5 stars
95
Fill Power
650 FP 800 FP 625 FP 800 FP 650 FP
Fill Type
Hydrophobic 80/20 Duck Down Hydrophobic 90/10 Goose Down Adv. Synthetic ClusterLoft Hydrophobic 90/10 Goose Down Hydrophobic 80/20 Duck Down
Pack Weight
2.56 / 2.71 / 2.89 lbs. 2.34 / 2.54 / 2.80 lbs. 2.62 / 2.8 / 3.13 lbs. 2.87 / 3.13 lbs. 2.95 / 3.20 lbs.
Fabric Toughness
400T, 20D Ripstop Nylon 400T, 20D Ripstop Nylon 400T, 20D Ripstop Nylon 400T, 20D Ripstop Nylon 400T, 20D Ripstop Nylon
Shell Base
Adv. Synthetic ClusterLoft Adv. Synthetic ClusterLoft Adv. Synthetic ClusterLoft Adv. Synthetic ClusterLoft Adv. Synthetic ClusterLoft
Special Features
Ultralight 3-season comfort Lighter option vs. Quandary 100% Vegan Materials Hammock-compatible Hammock-compatible
Comfort Temperature
50°F / 10°C 50°F / 10°C 50°F / 10°C 50°F / 10°C 50°F / 10°C
Comfort Limit
30°F / -1°C 30°F / -1°C 30°F / -1°C 30°F / -1°C 30°F / -1°C
Survival Limit
15°F / -9°C 15°F / -9°C 15°F / -9°C 15°F / -9°C 15°F / -9°C
Compressed Pack Size
7.5" x 11" 7" x 11" 7.5" x 11.5" 6.5" x 9.5" 7.5" x 10"
Two women standing in a Snowmass 0 F sleeping bag

Stay Toasty!

Our 650 Fill Power duck down features a high warmth-to-weight ratio, and the tough outer shell is treated with hydrophobic DWR coating.

Internal gear pocket

Secured Internal Gear Pocket

Handy internal gear pocket with secure hook & loop closure to stash cell phone, mini flashlight, headphones, & other amenities.

YYK Anti-snag zipper

YKK Anti-Snag Zipper

YKK zippers are manufactured with high standards and thorough quality control processes. Zips tight and reduces snag during regular use.

Man holding compressed Hyke & Byke sleeping bag.

Included Compression Sack

Lightweight but tough 400T, 20D ripstop nylon. Compress your Quandary sleeping bag down to just 11" long and 7.5" in diameter.

Woman wearing a Snowmass sleeping bag looking down at Dry Falls Overlook

Warmer 3-Season Cold Weather Sleeping Bag

Warm but ultralight, the Quandary bag weighs just 2.89 lbs. at Regular size but has powerful insulation for cold climates and near-freezing conditions. How does it work? Naturally hydrophobic down feathers create "loft" that traps heat and keeps you warm.

Snowmass 0 F camping sleeping bags

Stay Warm, Save Space, Shave Weight

Naturally hydrophobic 80/20 duck down fill packs a powerful weight-to-warmth ratio and is filled into horizontal baffles with an ingenious side channel that allows you to redistribute fill between baffles to where you need it most. Tighten interior draw strings to customize a snug and toasty fit.

USA Based Company

Gear That Gives

Hyke & Byke LLC is committed to eliminating poverty to through Kiva sponsors and is a member of the Conservation Alliance. Designed for Adventure and Designed in the USA, our mission is to create honest, top-quality, and innovative gear for you to live your adventures.

Hyke & Byke tent with dramatic sunrise.

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
1,123 global ratings

Customers say

Customers like the quality, warmth, weight, and comfort of the sleeping bag. They mention that it's solidly constructed, has great insulation, and is very comfortable. Some appreciate the value for money, saying that it works out for the price. Customers are also happy with size, and appearance.

AI-generated from the text of customer reviews

237 customers mention221 positive16 negative

Customers are satisfied with the quality of the sleeping bag. They mention that it is made of quality material, solidly constructed, and sewn expertly. Some say that it's the best sleeping bag they have ever owned. Overall, customers are happy with their purchase and recommend it to others.

"...I stayed toasty warm and slept nicely! I do believe this is the best sleeping bag I have ever owned!The weight of this bag is 2.9 lbs." Read more

"I bought this for a 7-day trek in Philmont Scout Ranch. It performed spectacularly!..." Read more

"...The outer material is lightweight but pretty sturdy, i move a lot when i sleep and sometimes ended up off of the sleeping pad on the rocks or sticks..." Read more

"...The bag stuffed easily back in its bag and the compression sack worked great. Bag is as advertised and fit nicely in my hiking pack...." Read more

224 customers mention205 positive19 negative

Customers are satisfied with the warmth of the sleeping bag. They mention it's fairly warm, but not very hot, and has great insulation. Some say that it'd be comfortable in the snow and that the temperature is correct.

"...I did wear long johns as well. I stayed toasty warm and slept nicely! I do believe this is the best sleeping bag I have ever owned!..." Read more

"...It performed spectacularly! It was warm enough for cold rainy nights and comfortable to lay on when the temps were in the 80s...." Read more

"Worked well for a 2 day ruck. Night temps were not too cold around 50F but quite windy around 25mph winds with stronger gusts...." Read more

"...I slept fine, nice and warm.The construction is good, nice heafty zippers and plush comfy fabric...." Read more

199 customers mention180 positive19 negative

Customers like the weight of the sleeping bag. They say it's very cozy, fits nicely in their back pack, and feels like it has weight to it. They also like the size and weight of this sleeping bag for backpacking trips, saying it'll pack easily into its own compression sack.

"...I purchased one for me, and one for my son.Super light weight.Compresses down very smallVery comfortable..." Read more

"...the smallest/lightest bag out there, but for the price it was light enough for me. I got the small/short size; I'm 5'2" with a slim build...." Read more

"...The outer material is lightweight but pretty sturdy, i move a lot when i sleep and sometimes ended up off of the sleeping pad on the rocks or sticks..." Read more

"...Warm light and comfortable, I have 2 other bags that I LOVE for summer camping and this was a great snag for my few “colder” trips I take every year." Read more

189 customers mention181 positive8 negative

Customers like the comfort of the sleeping bag. They say it's very comfortable, snug enough to be very cozy inside, and impressed with the silky feel and the good stitching. The fabric is soft and gentle on the skin, yet surprisingly durable. The bag is light, super compressible, and extremely fluffy when you roll it out. It's easy to keep in a tight roll and fit back into the back.

"...Super light weight.Compresses down very smallVery comfortable..." Read more

"...It was warm enough for cold rainy nights and comfortable to lay on when the temps were in the 80s...." Read more

"...It was 27F out and my patio is cement. The bag kept me perfectly comfortable (I get cold easily)...." Read more

"...Warm light and comfortable, I have 2 other bags that I LOVE for summer camping and this was a great snag for my few “colder” trips I take every year." Read more

113 customers mention110 positive3 negative

Customers appreciate the value of the sleeping bag. They mention that it is sewn expertly, has an excellent loft, and is affordable for winter weather. Some customers also appreciate the scouts who are looking for a quality affordable winter weather sleeping bag, and how great it worked out for the price.

"I am really happy with this sleeping bag. It costs much less than major competitor brands, and supports small businesses!..." Read more

"...Great sleeping bag for the price." Read more

"...the price is so reasonable, 3)..." Read more

"...Top notch product and a killer price for a bag of this quality...." Read more

76 customers mention64 positive12 negative

Customers like the size of the sleeping bag. They mention that the sack is decent size, the foot box is generous, and it doesn't take up much space. The construction is good and it's easy to store. The bag is warm and comfortable, with plenty of room to roll over inside. The internal drawstring is nice if you are cold, and the short length is perfect.

"...I got the small/short size; I'm 5'2" with a slim build. It is roomy enough to have a little space to move...." Read more

"...I have to say, I loved the bag! It was comfortable, packed smaller than the previous bag and fit in the bottom of my pack easily...." Read more

"...It is of excellent quality, is very light, very comfortable, and packs very small. However it is NOT EVEN CLOSE to being a 15 degree bag...." Read more

"...The sleeping bag is lightweight, and in the comp. sack decent size. First full size photo of the sleeping bag is opened up right from the comp. sack...." Read more

32 customers mention29 positive3 negative

Customers are satisfied with the appearance of the sleeping bag. They mention that it is well-made, designed, and comfortable. The zipper works smoothly, and the drawstrings are good quality. The logo is appropriate and not obnoxious, and all seams look good after three nights.

"...got around to purchasing one, and overall I am going to say, this bag is very nice. This is the regular sized bag...." Read more

"...I slept fine, nice and warm.The construction is good, nice heafty zippers and plush comfy fabric...." Read more

"...Was hesitant about the mummy bag as I have not used one before - It is nice and roomy for me - I am 5'7" & 150 lbs and purchased the regular..." Read more

"...All seams look good after 3 nights. No down coming out, no smell...." Read more

54 customers mention31 positive23 negative

Customers have mixed opinions about the zipper of the sleeping bag. Some mention that it is smart, easy to use, and light weight, while others say that it's a pain to operate in the dark, and there are a couple threads loose along the zipper.

"...Zipper functions great and the foot box was nice and warm...." Read more

"...However, as others pointed out, the zipper is a little difficult and the reason I knocked off one star...." Read more

"...The zipper and cable work great to snuggle in. The cell phone pocket.... not so much - I think it's in an odd place...." Read more

"...so far that was from other reviews is that there are a couple threads loose along the zipper. You can see some in one of the photos...." Read more

So far, I'm very impressed...
5 Stars
So far, I'm very impressed...
I have been looking for a good down sleeping bag for a long time and have been very hesitant because of the price. I have had this one on my wishlist for over a year now and am so happy I finally decided to purchase it. I have a week long backpacking trip in the Porcupine Mountains coming up and wanted something that I know will keep me warm. I will update my review after the trip...My biggest concern was the size. After reading the dimensions I was nervous. I'm a athletic build 5'3" 135lbs, was going to get the short, but afraid of the dimensions! I now see after getting in the bag that the short would have been fine for me. The regular is a bit too long but I can throw the clothes for the next day in the end to get warm. (Short: 72" long, 26" wide at the shoulders, 21" wide at the hips, 11" wide at the toe box) (Regular: 78" long, 28" wide at the shoulders, 22" wide at the hips, 11" wide at the toe box)Where my shoulders are 32" and hips are 28" so I was not sure how that was going to work out...I got in it and still had room to move about, I could have gotten the short and it would have worked.Before purchasing the sleeping bag I got a nice email from the owner of the company touching base if I had any questions or concerns. Very nice touch, I love the fact that I'm helping out a fellow American small business owner.The sleeping bag is lightweight, and in the comp. sack decent size. First full size photo of the sleeping bag is opened up right from the comp. sack. As I have been sitting here inspecting it, it is already fluffing itself up. I didn't shake it out or anything by the second full length photo. It inflated to roughly 4.5"-5". There are 2 pieces at the foot end for hanging the bag upside down. The drawstring on the hood and inside the bag are nice. They seem to be comparable to other high-end brands. There is a velcro piece that goes over the top part of the zipper at the head end. Its not the easiest to get undone if you are all bundled up inside with drawstrings closed, but perfectly doable. The zipper is double sided so you can unzip from the inside as well as from the foot end, if your feet get too toasty...I like that. I just wish that the end zipper had a little pull on it like the top one does...I'll just add one on for convenience.The only thing that I can see so far that was from other reviews is that there are a couple threads loose along the zipper. You can see some in one of the photos. I think that they just didn't get trimmed, but won't effect the performance in any way. It is a "plastic" feeling material but there are no feathers poking out through the fabric yet. Its the same feel as any other down coat or vest I have so I'm not too worried.They also attach a sticker that you can use to the tags. the "extras" are like a cherry on top.I'm going to follow the instructions from the owner and take this on my adventure, when I get back I'll add an update on the performance and sleep quality!
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Reviewed in the United States on October 28, 2019
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Reviewed in the United States on November 4, 2022
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Reviewed in the United States on November 11, 2018
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Top reviews from other countries

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Justyna
5.0 out of 5 stars Best ever, warmest ever, most comfortable ever!
Reviewed in the United Kingdom on August 22, 2023
Color: Light BlueSize: ShortVerified Purchase
One person found this helpful
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ER
5.0 out of 5 stars Cumple las expectativas
Reviewed in Spain on April 29, 2023
Color: Light BlueSize: ShortVerified Purchase
Tessa
5.0 out of 5 stars Super trekking slaapzak
Reviewed in the Netherlands on August 15, 2021
Color: Light BlueSize: RegularVerified Purchase
suz
5.0 out of 5 stars L'ho usato in Himalaya nel mese di maggio a quota 4000 a 5000 metri. OTTIMO!
Reviewed in Italy on June 8, 2019
Color: Light BlueSize: RegularVerified Purchase
13 people found this helpful
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loic
5.0 out of 5 stars rapport qualité prix imbattable
Reviewed in France on March 9, 2019
9 people found this helpful
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