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Mountain Hardwear stuffed the Women's Lamina 20 Synthetic Sleeping Bag with its proprietary Thermic Micro insulation, which is high-loft and compressible like down is but retains heat if it gets wet. Mountain Hardwear welded the synthetic insulation to the bag to enhance the loft, eliminate cold spots (the insulation can't shift around), and increase durability so it stands up to repeated washing and stuffing.

  • Women-specific comfort mummy cut designed to maximizes weight savings without being overly constrictive; additional fill place in strategic zones
  • Durable, lightweight nylon shell features a DWR treatment to repel dew, condensation, and frost
  • Thermic Micro synthetic fill is soft, compressible, and durable
  • Welded Lamina construction helps enhance loft and reduce cold spots
  • Soft polyester lining wicks moisture while you sleep
  • Comfort Footbox follows your foot's natural shape for maximum warmth and comfort
  • Face gasket and tailored hood block drafts and seal in warmth
  • Full-length, #8 zipper features double sliders for versatile ventilation
  • Included nylon compression stuff sack and mesh storage bag make storage and transport a breeze
  • Reviews
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Good, But You Could Do Better

  • Familiarity: I've used it several times

I have had this bag for over a year and have used it on several cold nights. The zipper is definitely this bag's biggest problem, coupled with the fact that the bag material is delicate. I caught the fabric in the zipper once and it tore a small hole in the bag -- not a deal breaker, but it's certainly an annoying bummer to have a hole in my bag after light use.

Overall though, this bag has done the trick. It has been very warm and I've been perfectly toasty in below-freezing temperatures. The loft is great, and the regular is snug even for me (I'm 5'3"). It is also very easy to pack.

I think the reason this bag is cheaper than a lot of other bags in the same category is because the fabric isn't durable (or waterproof) and the zipper really is a bother. I'd suggest spending a little more money on a bag that won't tear if you're a frequent backpacker (plus, it would be better to have a lighter bag anyway).

Wasnt happy :(

    The zipper is the big problem. No matter how genlte you are with it, it catches. Even one night out camping , I needed to go to the rest room and i was in my hammock, I got stuck. It is very snug to begin with, which is generally ok since you are trying to stay warm, but when you need to go.. and your stuck cause the zipper wont move budge, you feel very panic and claustrophobic. I had to wait until someone got up to let me out. Same morning my boyfriend who has the guy version got the zipper stuck while trying to pack it up. My clasp to the stuff sack did not break but is weak and will not snap in place. It is very heavy so if you are hiking and trying to carry low weight as possible this isnt for you.

    The zipper was a big problem for me, too. I panicked one night when I really had to pee. It was pitch black outside and I couldn't get my arms out of my bag!!!!!!

    I found this bag to be rather heavy for the warmth rating. And the foot area is very tight - and I am a size 7.5 women's foot.

    Also, the stuff sack drawstring got shredded the second time I stuffed the bag. Overall, I was not super stoked with my experience and will be looking for a different bag.

    Great for backpacking!

      Loved how light & tightly packed this bag can get. It's fantastic for backpacking. I actually haven't had the problems elaine describes--around 40 degrees, I've been fine, and I tend to get cold fairly easily. It is definitely not the roomiest bag around, but that works fine for me--just info to know, I guess.


        I purchased this bag brand new to use in 30-35 degree nights. After perusing many websites, the temp rating for women should be around 28-31. The nights were 37 degrees and I was coooooold! This brand/bag is not a good choice for women who get cold at night while camping, and want to crawl into a bag and know they will be warm and cozy. Also, this brand/bag is not for a woman with the baby boomer spread. After a couple of kids and the inevitability of aging, no matter how in shape you are takes its toll. I don't think you should have to buy a 0 degree bag to sleep comfortably in 35 degree night temp. All in all, I would not recommend this bag even on sale for $100.

        I'm sorry this bag did not work out for you Elaine. The temperature ratings given to bags are not comfort ratings. They're somewhere between the lowest temperature you'd survive at (meaning you'll be cold but not severely hypothermic) and what's comfortable.

        Whether or not you're warm depends on a lot of factors? Have you eaten recently? What did you eat? Are you hydrated? Is it humid? Do you have good or bad circulation?......

        Mountain Hardwear is now testing their bags with the EN (European Norm) standards. They give this bag a T-Comfort rating of 36 degrees Fahrenheit. The T Comfort rating is the coldest temperature at which a "standard" woman will sleep comfortably through the night. If you know you have bad circulation or generally sleep colder than other women, then the lowest comfortable temperature will be even higher for you. (The T Limit rating, that which the "standard" male will sleep comfortably through the night, is 27 degrees.)

        In general, I suggest that women buy a sleeping bag rated 15 to 20 degrees below the coldest temperatures they expect to use the bag in. Hopefully the EN ratings will become more widely adopted in the US.