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The Mountain Hardwear Lamina 20-Degree Synthetic Sleeping Bag features Mountain Hardwear's proprietary Thermic Micro insulation. This insulation is high-loft and compressible like down, but it doesn't lose its warmth if it gets wet. The Thermic Micro is welded directly to the bag, which increases durability and eliminates the need for baffles, and decreases cold spots.

  • Comfort mummy cut designed to maximizes weight savings without being overly constrictive
  • 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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Warm everywhere but the foot box

    Great, light bag with solid construction. I typically use it as a hammock top quilt when I'm not ground camping. In both scenarios I've noticed my feet get a little colder than my last bag. Other than that, it's a damn good bag. Packs down small, is fairy light, and lofts nicely.

    Nice bag bro!

    • Familiarity: I've put it through the wringer

    I really like this bag! It's very packable, light enough for backpacking and I think warm enough for those semi-cold nights (I've used it when it was mid-teens and was perfectly warm enough). I haven't had any durability issues with pretty heavy use over the last 3 years or so (and that takes into account my 3 German Shepherds making our MH Lamina 20 bags into a wrestling ring every time we camp). The only gripe I have is that one of our MH Lamina 20 bags zippers can be difficult. The other bag is totally fine, so it seems like it's maybe just a glitch. I would certainly recommend it!

    Really Great, but a Zipper Nightmare

    • Familiarity: I've put it through the wringer

    This is a great synthetic sleeping bag; It's warm but rarely stuffy, definitely 3 season and 4 season in the South, it's light to carry, it's easy to pack up, it hasn't gotten stinky, it's soft and comfy, very durable, and it's aesthetically pleasing.

    I would say this is the ultimate go-to sleeping bag, but that stupid zipper can be the worst! All sleeping bag zippers suck, but this one has really screwed me over a few times. There is no sneaking out of it if you're trying to let someone else in the tent sleep: you will huff and puff and grunt with all the exertion and frustration of trying and failing for MINUTES to get out of bed. Was that a wolf or a dog trying to get into the rainfly that one night? I'll never know, because I was stuck in my bag. And then there was the earthquake.....I really don't know why all sleeping bag zippers are all so terrible, but this one is exceptionally bad. Yet I feel the bag itself is exceptionally good. All nightmare-realities aside I doubt I'll ever find a better sleeping bag.

    Great bag, nightmare zipper!

    • Familiarity: I've put it through the wringer

    True: Super soft, truer to rating than most bags, good fit. Packs down well. Lightweight for synthetic.

    I have a down bag of similar rating but the dang thing loses so much insulating value not just if you get it wet but if it is damp out or if you breath into it at night. So for synthetic, the MH Lamina is nice.

    YOU WILL NEVER GET OUT OF THIS BAG ONCE YOU GET IN. The zipper really is that bad. If you have claustrophobia or if a bear is trying to get into your tent, you will experience your worst nightmare. You ever see those videos of monarchs trying to extricate themselves from their pupa shells...

    Though this is still my goto bag (I have 5 bags), I'm still searching for the right bag.

    Toasty from head to toe

      Very happy with the product, over night hikes on the Appalachian Trail in Virginia and working at a summer camp that always got super cold at night this thing was perfect, it packs up super small, is pretty lightweight, and fits in the bottom of my Osprey Pack no problem, I always sleep in a hammock and never had too tough a time getting situated in it. Note this, I am only 5'6 and got a normal size so I definitely could see getting the long just to have a little extra room because my feet are only a few inches from the end. All together happy with this bag

      Great bag with a shitty zipper.

      • Familiarity: I've put it through the wringer

      I took it on the Jonh Muir Trail and it performed well other than the zipper. I am astounded that such a great company would apply such a bad zipper design to such a good bag. The black piece of insulating material that lines the zipper gets caught almost every time i zip and unzip. I resorted to worming my way in and out of the thing every morning and evening. The hood and neck tighteners work well once you get to know how they operate. Im six feet tall and the long version fit me well. I was uncomfortable under 32 degrees.

      Summer bag

      • Familiarity: I've used it once or twice and have initial impressions

      I bought this bag knowing it wasn't the warmest but didn't know what to expect. It is very thin with minimal insulation. I tried using it with a thermarest solar ridge pad inside my house and was still chilly for at least 15 minutes. I don't see how this could possibly be warm if I had jeans and a long sleeve shirt indoors. On the positive side it is light. It packs fairly well but that could be due to lack of insulation. The material is extremely comfortable to touch but not support. If you plan to he a more winter bag grab a marmot tressle 30 for $20-$60. It will be bulkier but compresses very well for it's size and will actually keep you warm to 30 degrees (Fahrenheit) or possibly lower and will last longer.

      Warm, Comfortable, Compact

      • Familiarity: I've used it several times

      I have used this bag in the spring camping in Idaho, and from the Oregon California boarder to Southern California. I was surprisingly warm the first two nights and adjusted layers and my tent to stay comfortable. I have since then used the bag in the high of summer near Redfish Lake Idaho and was perfectly comfortable. I love that the bag is lightweight and compact. I have previously used an old down bag that is much heavier and larger. I would recommend this bag to anyone who enjoys camping in Spring, Summer and Fall.

      great bag...even better with two...

      • Familiarity: I've used it several times

      i picked up two of these a right zip and a left zip for myself and my girlfriend. super warm and roomy....kept us both warm and dry on a week long river trip. perfect at cooler temps with two people but a bit too warm with two people at around 45 degrees. the zipper does snag but not that bad if you know its going to.

      Excellent so far

        Just got this a few weeks ago. slept outside when it was in the 40's and with a few layers and no sleeping pad i was plenty warm and I hate being cold. also used it when it got in the high 50's and it wasnt too hot. Will be testing it when it hits the 30's this fall. If its still good in the 20's 30's I'll give it a 5. I would recommend this. Stuffs easily into the stuff sack too

        Killer Value

          This bag has to be one of the best deals. It packs down to a reasonable size, and doesn't weight too much.

          A full length #8 zipper makes it compatible with most other sleeping bags if you want to zip them together.

          This bag packs down to the same size and weight as a lot of 600-fill bags, but costs a fair amount less. If you're looking for an entry level sleeping bag that will be good for all around camping and a bit of backpacking, this is it for sure.

          The draft tube does get caught in the zipper sometimes, but that's not different for any other sleeping bag so I am not making an issue about it

          Excellent lightweight bag

            On it's first outing the temperature went down to about 30 degrees and the bag kept me very warm. I have not had any problem with the zipper any more than any other bag I have owned. I am 5'11" and the bag fits great with just a couple of inches of extra room. At 3 pounds it was just the weight I wanted for my backpacking outings. The compression sack gets it down to a very small size.

            great for the money

              Other reviewers noted that the zipper gets stuck, and yes it does got hung up, but its warm and light, so who cares if it takes an extra minute to zip up? I've used it in the low 30's and found it to be plenty warm, so at 3 lbs I'm very happy to get it at this price point.

              nice budget bag if you want compression

                This isn't a down bag but it still compresses well for a synthetic and has an AWESOME stuff sack included. Zipper snags a lot, but overall it's a great bag. I sleep cold so it's comfy to about 45 degrees for me. Also check out Kelty Light Year and North Face Cat's Meow as alternatives to see what suits you. I'm a skinny 6'1" and the long is really roomy for me...I could have gotten away with the regular.

                I am very interested in this bag. I would...

                I am very interested in this bag. I would like to know if this sleeping bag is joinable with another lamina Mountain hardwear sleeping bag ? Thanks for your answer.

                Hi Isabelle,

                Thanks for the question. You can certainly mate the Mountain Hardwear Lamina 20 Sleeping Bag with another Lamina model. I would just be sure that the Lamina you match it with is the same length and zipper number. Or, if you are going to keep the two bags mated, you could just go with the 2 person Megalamina 20.

                With a good compression stuff sack, what...

                With a good compression stuff sack, what would be the dimensions of this bag?

                I am very interested in this bag, but am...

                I am very interested in this bag, but am wondering if I will be sweating my butt off on a warm summer night.

                Best Answer

                Yeah, lower rated bags can get pretty hot when you use them during the summer, but a 20 degree rating isn't too bad, and it's a good all-around bag for most 3-season use. The full zip is a handy feature. Get too hot-unzip it until you're comfortable, or use it like a blanket while you sleep directly on your ground pad to cool off. Get too cold- zip back in and warm back up. I didn't get this one, but recently got another bag rated at the same temperature with the plan being to use it mostly during the summer. Go for it. Hope that helped.