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  • Unique welded construction reduces weight and bulk, maximizes insulation loft, eliminates cold spots and thermally maps insulation to areas where warmth is needed most
  • Thermal.Q™ insulation has outstanding compressibility, maintains excellent loft and continues to insulate even when damp
  • Ergonomic draft collar and tailored hood with face gasket comfortably block drafts and seal in warmth
  • Comfort footbox follows natural foot position for maximum warmth and comfort
  • Soft polyester lining wicks away moisture and lightweight nylon shell has a durable water repellent finish to ward off moisture
  • Full-length #5 zipper with double sliders for versatile ventilation
  • Zippered pocket at shoulder
  • Nylon compression stuff sack and mesh storage bag included
  • 21°F EN (European Norm) comfort rating is suitable for 3-season use


View all Mountain Hardwear Women's Sleeping Bags

REI membership


Best Use Backpacking
EN Lower Limit 10 degrees Fahrenheit
EN Comfort 21 degrees Fahrenheit
Temperature Rating (F) 21 degrees Fahrenheit
Temperature Rating (C) -6 degrees Celsius
Long Right
3 lbs. 11 oz. ounces
Regular Right
3 lbs. 7 oz. ounces
Shell 30-denier ripstop nylon
Zipper Location Right
Insulation Type Synthetic
Fill Thermal.Q synthetic fibers
Fill Weight 2 lbs. 9 oz.
Lining 40-denier polyester taffeta
Sleeping Bag Shape Mummy
Fits Up To (in.)
Long Right
72 inches
Regular Right
66 inches
Shoulder Girth (in.)
Long Right
60 inches
Regular Right
58 inches
Hip Girth (in.)
Long Right
59 inches
Regular Right
53 inches
Stuff Sack Size 8 x 18 inches
Stuff Sack Volume
Long Right
15.9 liters
Regular Right
15.9 liters
Compressed Volume
Long Right
10.25 liters
Regular Right
9.5 liters
Gender Women's
Rated 5 out of 5 by from Kept my husband and I super toasty! Bought this sleeping bag for a weekend backpacking trip in the Sierras in August, where temps dipped down to the low 40s at night. This bag instantly warmed me up the second I slipped inside, and I am ALWAYS cold. It even saved my husband, who thought he could withstand the cold with a 55-degree REI travel sack sleeping bag and 15-degree liner. I opened up the bag and draped it over the both of us like a blanket, and he knocked out within seconds after that! No shivering whatsoever! Another plus is that it comes with its own compression sack, and it easily fit inside the sleeping bag compartment of my Osprey Kyte 46 pack. Love this bag!
Date published: 2015-08-10
Rated 4 out of 5 by from Toasty, even when wet! I picked this bag up in March and I lurve it. Despite my sleeping very cold - ok, frigid - it kept me comfy and warm in the North Cascades (upper 20's - low 30's overnight) in April and it kept me warm in the Olympics despite getting quite damp (lows in the upper 30's). It's light enough to be packable and it shrinks down to a relatively tiny size in my pack. I agree with another reviewer. While mine hasn't had suicidal tendencies and tried to jump off a cliff, she's slippery and can, at times, be hard to hang on to. But, that same slip is nice when I roll over at night!
Date published: 2015-06-30
Rated 3 out of 5 by from Not warm enough I used this sleeping bag on two backpacking trips to the Alpine Lakes region of the Cascades a few weeks ago. For each trip I froze and wasn't able to sleep. Temps were down to the high 30s, low 40s and I could not get warm. Because the bag is synthetic you don't have to worry much about getting it wet. It also comes with a nice compression sack so with some serious stuffing I can get it to fit at the bottom of my Osprey Ariel 65 backpack. I've decided to take this bag back and getting a 0F degree bag instead. I sleep cold and need more insulation to get a decent nights rest.
Date published: 2015-06-24
Rated 4 out of 5 by from Great but needs psych eval. I bought this bag at REI and took her on very my first camping experience and FROZE. This however has nothing to do with the bag itself, besides the fact that it was clearly depressed and rolled itself straight off of a 3,000 ft cliff. Had I known this, I would not have taken her to such a vulnerable place, but I was provided with no suicide help hotline and was completely unaware of her state of desperation. We didn't even get to spend a single night together, and she had so much going for her. So much untapped potential. Before I muster up enough emotional strength to get another one, I question if any others have had similar experiences. What's that? No one? Okay, 4 stars for lightweight trek-ability and appearance, 0 stars for emotional stability and thwarting camping plans.
Date published: 2015-06-20
Rated 5 out of 5 by from Perfect for someone always cold After having an awful car camping experience (driving down the Rocky Mountains at 1am) because I was freezing cold, I did some epic research on women's sleeping bags. I finally landed on this one, and have to say, I couldn't be happier. With that being said, I wasn't looking for backpacking anything, but mainly focused on comfort and warmth - which for me, this sleeping bag hit the mark. It was warm, comfy, and as a side to stomach sleeper, slept like a baby. We do most of our camping in Summer in the Rocky Mountains where the nights get to 30F-40F, and I sleep perfectly in just my long underwear and socks.
Date published: 2017-01-22
Rated 3 out of 5 by from Too bulky for backpacking This sleeping bag is really comfortable. If you're car camping it's great! I would definitely recommend it for that. I bought it for backpacking, though, and took it on one trip before having to return it. It doesn't squish down enough to fit in the sleeping bag compartment of a backpack (I have an Osprey Ariel 65). I ended up having to put it in the main compartment of my back, which of course took up most of the space, and was incredibly inconvenient AND uncomfortable. Maybe it would have compressed more in a compression sack, but it was worth it to me to switch it out for a different bag, which was both lighter and compressed better into my pack.
Date published: 2017-05-25
Rated 5 out of 5 by from Cozy Coccoon I picked this bag up last minute before an April trip to Utah after the forecast took a turn for the frigid, and the forecasted overnight temps in the 20s made me reconsider taking my 35 degree bag. I was very glad I grabbed this bag. My first night, the temp got down to 24, and I stayed snug as a bug zipped inside. The only downside was having to get out of it in the morning! I did have it paired with a really nice, insulated sleeping pad (which, of course, always). The foot box was roomy, and my feet stayed toasty, even in the sub- freezing temps each night. Something else I appreciated was the roominess of the bag. I am a tad tall, so I got the long, and I didn't get that claustrophobic feel of sleeping in a coffin that you can get in some mummy bags. I could comfortably flip from sleeping on my back to sleeping on my stomach, which was a definite plus. It is nicely compressible, and while it's not the lightest bag you can get, I feel like it is a reasonable weight, especially for the price. I'm not an ounce counter though, and I'll gladly carry a few extra ounces for a little bit of extra comfort! I've had a few different bags in my camping days, and this is by far one of my favorites.
Date published: 2015-07-15
Rated 5 out of 5 by from Kept me warm! I'm always cold and was worried about feeling "stuck" in a mummy bag. It kept me warm in 32 degrees and comfortable. I move around a lot! I'm also not skinny by any means. Very happy with it. I am 5'6" tall and had to get the long one though.
Date published: 2016-05-15
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Can this sleeping bag connect to the male version? 

Asked by: Jorge E Mendoza
A men's and women's Laminina Z Flame Sleeping Bag will mate together.
Answered by: REIservice
Date published: 2017-03-06

How well will this back fit in a NF terra 40 pack? My current sleeping back takes up half my pack! 

Asked by: Jennifer
​The compressed volume is approximately 10 liters.
Answered by: REIservice
Date published: 2017-03-16

Is the compression bag everyone speaks of the mesh bag? It does not seem to do any compressing!? 

Asked by: HollyG
This sleeping bag includes a mesh storage bag (to be stored in uncompressed) and a compression stuff sack.
Answered by: REIservice
Date published: 2016-12-09

what size compression bag should I get for this sleeping bag? my sleeping bag is the regular women's size.

Asked by: acadiatraveler
A 15 liter compression sack is the best choice for this sleeping bag.
Answered by: REIservice
Date published: 2017-05-19

Is the compression sack waterproof?

Asked by: Sharon K
No, the compression sack is not waterproof.
Answered by: REIservice
Date published: 2017-03-19

Can you please provide manufacturer washing instructions/recommendations?

Asked by: Valerie R
For instructions on washing your sleeping bag, please visit the following link:
Answered by: REIservice
Date published: 2017-02-26

If I am 5'5" should I get the regular or the long?

Asked by: Caroline K
The regular is designed to fit a women up to 5'6" tall, so the regular should work fine for someone 5' 5".
Answered by: REIservice
Date published: 2016-11-16

I am 5' 6" would the regular right provide any wiggle room or should i size up for that?

Asked by: stellz
The regular size will not be a snug fit head-to-toe at 66 inches, but if you want to be able to move in your sleep you can size up for the additional 6 inches of space.
Answered by: REIservice
Date published: 2017-04-10
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