Mountain Hardwear Ratio 15 Sleeping Bag

View the 47 reviews with an average rating of 4.7 out of 5 stars

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The Mountain Hardwear Ratio 15 down sleeping bag delivers 3-season warmth for backpackers and campers who want to lighten their load with down fill instead of synthetic.

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Fill

650-fill down

Temperature Rating (F)

12 degrees (F)

Insulated with lightweight and compressible Q.Shield™ 650-fill-power down to keep you warm
Q.Shield advance water repellency technology protects individual down fibers from moisture so they retain loft and insulation properties; Q.Shield won't wear off
ThermoTrap Baffle construction locks the down into small chambers for less down migration, an even loft height and consistent wamth
With a lower-limit European Norm (EN) rating of 12°F, the Ratio 15 is a versatile bag for lightweight adventures into the mountains
Comfort mummy cut efficiently maximizes warmth and minimizes weight without constriction
Down-filled face gasket comfortably blocks drafts at the hood opening
Insulated draft tube with anti-snag panel prevents cold spots along the zipper
Full-length, two-way zipper with locking sliders stays in place when the bag is partially unzipped for ventilation
Single-handed drawcords easily adjust hood closure
Mountain Hardwear Ratio 15 sleeping bag comes with a mesh storage sack and a stuff sack

Imported.

Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.

View all Mountain Hardwear Backpacking Sleeping Bags

Best Use	Backpacking
Tested Lower Limit	12 degrees (F) - EN
Tested Comfort	24 degrees (F) - EN
Temperature Rating (F)	12 degrees (F)
Temperature Rating (C)	-11 degrees (C)
Shell	Nylon
Zipper Location	Left
Insulation Type	Down
Water-Resistant Down	Yes
Fill	650-fill down
Lining	Nylon
Sleeping Bag Shape	Mummy
Stuff Sack Size	8 x 15 inches
Stuff Sack Volume	12 liters
Gender	Unisex

How to Choose Sleeping Bags for Backpacking

Do I really need a backpacking-specific bag?

Yes. These sleeping bags are lighter, pack down smaller and are more efficient at keeping you warm compared to ones for camping.

Understand sleeping-bag weight

Insulation type and bag shape affect weight the most. Always consider bags of a similar temperature rating when comparing loads.

Choose the right fit
Many sleeping bags come in regular, long and short sizes. Review the bag's size specs for the best fit.

Consider other features
Draft-blocking details, a snug-fitting hood, extra zippers and even a stash pocket can add more durability, warmth and function.

A sleeping bag inside a backpacking tent

More expert advice

A woman peeking out of a bright-orange sleeping bag

Understanding Sleeping Bag Temperature Ratings

A backpacker walks across a footbridge in the woods

Backpacking for Beginners

A variety of sleeping bag liners on a table

How to Choose Sleeping Bag Liners

Ratings Snapshot

Product Rating

4.7

View the reviews with an average rating of 4.7 out of 5 stars47 Reviews

43 out of 45 (96%) reviewers recommend this product

Review this Product

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Most Helpful Favorable Review

5 reviews with an average rating of 5.0 out of 5 stars

Awesome Bag!

Treadmill

9 years ago

Received free product

In preparation for a campaing and kayaking trip to Vancouver, I bought my wife a Heratio 15 and another brand named after a way up Everest for myself. She loved her Heratio and was comfy in just her underwear. I had to put on longjohns and socks to get warm, and one of the cross baffles basically did not have any down in it! So, when we got back, I disposed of my NF bag and got myself a Ratio. Aaaaahhh, pure bliss! Super warm and comfortable; just plain perfect. Couldnt possibly recommend it more highly.

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Treadmill

Gainesville, Florida USA

25 people found this review helpful

Most Helpful Critical Review

5 reviews with an average rating of 2.0 out of 5 stars

Light but not warm enough for me.

Steve

8 years ago

Received free product

While I love the size and weight, I have to admit it is not as warm as I hoped. It is rated for 15 degrees F. I took it camping in mid-October here. There was frost when we woke up. I got in my car to warm-up, where the car themometer said it was 30F. But I was very cold all night, too cold to relax at all, even though I was on top of a Thermarest, and was wearing a hat, socks, polypro pants, and 2 layers on my core. I am skeptical that this was tested at the rated temperature. I am 57, and I have camped a LOT, so I have to admit that my synthetic rectangular LumberJack is heavy but warm. I recommend you adjust your temperature expectations by at least 20 degrees.

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Steve

Denver, CO, United States

11 people found this review helpful

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Treadmill

Gainesville, Florida USA

Rated 5.0 out of 5 stars

9 years ago

Helpful?

Steve

Denver, CO, United States

Rated 2.0 out of 5 stars

8 years ago

No, I do not recommend this product

Helpful?

RTH722

Philadelphia, PA

Rated 5.0 out of 5 stars

6 years ago

I wasn't on a mountain but I was in the woods and the temperature went down to about 15F and I was comfortable all things considered. I was wearing base layer top and bottom, softshell pants, and fleece layer top. We were in a 3 season tent so it was a little drafty. My water bottle was in the tent but outside my bag and in the morning it was frozen solid so temperature inside the tent was definitely below freezing. I think I could have tolerated a little bit colder conditions in this bag. I am 6' and I was not tight in the size Regular but there was not a lot of length to spare. I would say anyone taller than 6'2" might be on the verge of uncomfortable.

Yes , I recommend this product

Originally posted on mountainhardwear.com

Hikeman977

Arizona

Rated 5.0 out of 5 stars

7 years ago

Bought this bag because my older bag was getting a little old and wasn't as warm as I wanted it to be. Bought this because expecting to have a bag that would keep me warm on cold nights (yes.. even here in Arizona is gets cold - at least to me!) and I wanted a bag that would compact and be light weight. I bought this bag... took it to the Grand Canyon in late October - and slept out under the stars - in complete warmth. Loved it so much the Scoutmaster and two scouts in our troop bought the same bag - no complaints - just confidence that I can sleep well at night regardless of the temperatures I might face.

Yes , I recommend this product

Helpful?

jacob

Michigan

Rated 5.0 out of 5 stars

5 years ago

I bought one of these on closeout before REI ran out and loved it so much I decided to get another for my wife. If you google really hard you can still find the Long size available a few places. It's only 6 inches longer and fits in the same size stuff sack, so go for it! Mountain Hardwear must have discontinued these to push sales to their more expensive options...that's the only reason I can think of because it is an awesome bag. Well worth the price.

Yes , I recommend this product

Helpful?

Jasalvas

San Francisco

Rated 5.0 out of 5 stars

11 years ago

My wife and I each purchased a Ratio and Heratio sleeping bag for hiking the Inca Trail to Machu Picchu. Right off the back I really liked this bag. Our first night on the trail there were lows in the high teens. I stayed completely warm the entire night. The bag is spacious in the right areas. I am 5'9'', weigh 160 pounds and have the room to sleep with bent knees. I have had 15 degree bags in the past that have failed miserably. So far I have used the Ratio about 9 times and have been more than pleased every time. The Ratio is a highly recommended product.

Yes , I recommend this product

Originally posted on mountainhardwear.com

DunderMifflin

Greenville, SC

Rated 5.0 out of 5 stars

8 years ago

I have used this bag for about 7 months now. It is a very warm and very compressible bag. Using a compression sack, it fit nicely into the bottom compartment of my day pack (38L). Recently I used it camping in Colorado. It got cold that night and rained the entire time. Due to 3 people being in a 2 person tent, my bag got wet where the footprint didn't cover. Didn't even notice the bag was wet during the night and the down did not lose it's loft as a result. The Q.shield works! Bottom line, I would recommend this product as a great multi-season bag!

Yes , I recommend this product

Originally posted on mountainhardwear.com

roysail

Bellingham, WA

Rated 1.0 out of 5 stars

7 years ago

In recent years I've been on a search for "the perfect backpacking sleeping bag". About 30 years ago I sewed up an expedition- weight bag, still going strong but much too heavy for warm-season use. Have 5 other bags of various weights, am convinced that synthetic does not have cold spots underneath; that down does. Liked a little synthetic Mtn Hardware Pinole that has served well, wanted a little warmer and lighter if possible. But synthetic is so bulky. Decided to try the Ratio 15. Right out of the box it's a beautiful, comfy bag. Got it November 2016, went on a couple of chilly late season trips...not too bad, a few cold spots underneath where the down is compressed. Fast forward to now: August 2017, 10 months later, total of 4 weeks max use of the bag. First off, nothing in the specs on either REI nor Mtn H'ware prepared me for the tag: it says Duck Down. Not goose down. It's a little too close to false advertising. I would have devalued the bag by around $80-100 because of that. Secondly, I happened to glance at the stitching inside the bag yesterday- and now it's definitely getting returned. Below knee level, the baffle stitching inside the bag has WORN THRU, gone in many places. Poor quality thread. Down can now migrate all around the foot. A seam at the bottom of the zipper has begun to open up, letting down out. Can't justify a $260 bag that doesn't even last 1 year.

No, I do not recommend this product

Helpful?

Matthew97

Bar Harbor, Maine

Rated 5.0 out of 5 stars

9 years ago

This bag was the first step up for me from a generic, rectangular camping bag and I am so glad I picked the Ratio! I've used it a couple times while car camping as well as during backpacking and the Q Shield Down has always retained the warmth I've needed even during some winter months! This spring I was wondering how the Down would hold up to some major morning dew, but though the exterior was somewhat damp, I remained dry and comfortable.I recommended the bag to on of my colleagues who now owns one and would wholeheartedly agree with this review!

Yes , I recommend this product

Originally posted on mountainhardwear.com

ScooterB

Florida, Florida

Rated 5.0 out of 5 stars

9 years ago

My wife and I recently took a multi-day camping trip in Canada. We bought her a Heratio 15F bag and I bought a 20F bag from another manufacturer. Nighttime temps were in the low 40sF. She was comfortable in her underwear and bare feet; I could not get warm until I put on long underwear and socks. And one of the cross compartments was devoid of down, I assume a manufacturing defect. Anyway, I just bought a Ratio 15 for myself, and compared it side-by-side to the other bag. I was stunned at the vast difference between the Ratio and the other bag! Better outer shell, more down, puffy right out of the sack, etc. Then I crawled in and Presto! Immediate warmth! Now I can join my wife sleeping in blissful warmth. Thanks MH for a wonderful product!

Yes , I recommend this product

Originally posted on mountainhardwear.com

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Mountain Hardwear Ratio 15 Sleeping Bag

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