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  • Mountain Hardwear - Lamina Z Sleeping Bag: 34 Degree Synthetic - Flame
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  • Mountain Hardwear - Lamina Z Sleeping Bag: 34 Degree Synthetic - Flame

Mountain Hardwear Lamina Z Sleeping Bag: 34 Degree Synthetic

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    9 Reviews


    Make cold spots a thing of the past.

    Mountain Hardwear designed the Lamina Z Spark 34-Degree Synthetic Bag to virtually eliminate cold spots, so you don't wake up cold in the middle of the night. The bag's welded Lamina construction prevents the Thermal.Q insulation from migrating and leaving you with cold spots, and the strategic insulation mapping concentrates warmth around your core and feet, helping your most important and vulnerable spots stay warm and comfy.

    Condensation can also leave you chilly, so Mountain Hardwear finished the Spark's Lamina Revamp nylon shell off with a DWR treatment to repel water. The face gasket and tailored hood stop heat from escaping from out the top of the bag, and the comfort mummy shape and footbox provide a slightly roomier fit for better insulation and more room to move.

    • Lamina Revamp ripstop nylon shell with DWR treatment
    • Polyester lining
    • Thermal.Q Thermic Micro synthetic insulation
    • Welded Lamina construction
    • Comfort mummy shape
    • Full-length zipper
    • Face gasket and tailored hood
    • Comfort footbox
    • Zippered shoulder pocket
    • Item #MHW00ML

    Tech Specs

    [face fabric] Lamina Revamp ripstop (100% nylon), [lining] 40D polyester
    Thermal.Q (60g)
    Max User Height
    [regular] 6 ft, [long] 6 ft 6 in
    Shoulder Circumference
    [regular] 63 in, [long] 65 in
    Hip Circumference
    [regular] 59 in, [long] 64 in
    Foot Circumference
    [regular] 41 in, [long] 43 in
    Bag Length
    [regular] 78 in, [long] 84 in
    Draft Tube
    European Norm Comfort Rating
    42 F
    European Norm Lower Limit Rating
    34 F
    Stuff Sack
    Stuff Size
    6 x 12 in
    Claimed Weight
    [regular] 2 lb 1 oz, [long] 2 lb 3 oz
    Recommended Use
    camping, backpacking
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

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    Super pleased! Comfy and warm

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

    Really happy. I've used it 3 times now and very warm and comfy. Packs light. Great bag for great price!


    • Familiarity: I've used it several times

    Holds up to the specs and rep! Purchased a second one to zip together for when my girlfriend and I go camping. Keeps you warm - doesn't stick to your skin (if you sweat in your sleep) - very comfortable!

    Awesome bag, inexpensive!

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

    I took this bag on a quick overnighter here in the Wasatch. The lower limit on this bag is 34 degrees F, and the comfort level is 42 degrees. I took it right below the comfort rating with no fly on my tent, wearing no base layers and at no point felt chilly.

    I haven’t tested it yet in any wet conditions, but the features will make it excellent for those situations.

    The DWR coating on this bag keeps the insulation inside nice and dry even with plenty of condensation. Another plus to this bag is the Thermal.Q synthetic insulation, which would still perform very well if unintentionally soaked. This insulation is so light and compressible, when I first picked it up, I thought I’d accidentally been given a down bag!

    Overall this is a great 2.5 season bag. Here in Utah it is ideal for anything April-October. I’m normally not a synthetic bag fan, but this thing was so light, and packed down so small that I’m pretty convinced it’ll be a go-to for future adventures in its temperature range.

Awesome bag, inexpensive!

    Great option for wetter conditions

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

    I was able to test 'er out this weekend near the Great Salt Lake. I didn't happen to get water on the inside of my tent (thank goodness), but it wouldn't have been the end of the world, as this bag won't lose its insulative properties when it gets wet, because the insulation is a Thermal.Q Thermic Micro synthetic. Anyway, it got into the mid 40's and I was plenty warm throughout the night. Additionally it packs fairly small for a synthetic bag. It's definitely not a bad option at all considering the price point.

    This bag does the job

    • Familiarity: I've used it several times

    Used it three nights in the Sangre de Cristo Mountains near 11,000 feet. It kept me toasty warm in my hammock (with under-quilt) in 42 degree nights with wind and rain. It compresses very well, fluffs up easily, and is lightweight. I love it.

    Temp rating was right on.

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

    I wanted a bag that would be warm enough as I sleep cold, but not too hot as I was camping in UT July and it can stay fairly warm at night.
    This bag held up to the 34 degree rating perfectly, I did have to sleep in my down jacket and socks to be totally comfortable, but that is pretty normal again, as I sleep cold personally.
    My favorite things about this bag is that for the temperature rating, it packed down super small to fit into a 40L bag without taking too much space up, about 6" long with a circumference of about 11" even though the specs say 12". It was a light as it says in the specs too, which was awesome and left plenty of room in my pack for food, clothing, and of course some beers!

    I would definitely recommend this sleeping bag for spring and summer camping.

    nice small packing synthetic bag

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

    I took this bag backpacking in Glacier over the summer. I am 6 ft and this was the regular size. Wish i had the long. Would have been more comfortable. Kept me warm in temps around 40 but 30 would have been too cold for me. I recommend this to people looking for a more entry level. Great value!

    nice small packing synthetic bag

    great bag, beware of published specs

    • Familiarity: I've put it through the wringer

    I purchased the Lamina Z Spark to have around in addition to my MH Ratio 32 down bag, simply as an alternative for predictably soggy trips. So far it has worked great. I have had it down into the mid 40s and high 30s and have stayed nice and cozy throughout the night sleeping in just base layers. It is very roomy, .

    The Lamina Z Spark is impressively warm for how lightweight it is, and my Large size bag packs down to about 7" x 13" in the compression sack. Minus the stuff sack, my bag is 2-3 ounces heavier than advertised, so if you're picky about that, be forewarned.

    great bag, beware of published specs