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Getting lost isn’t all bad—at least you’ll get some time to yourself.

The lightweight Adventure Medical Thermal Bivvy reflects 80% of your body heat right back at you, so you can stay warm whether you're backpacking in summer weather or 'enjoying' an unexpected night or two in the woods. The non-woven material is stronger and more durable than typical Mylar survival blankets, so you can use it more than once.

  • Metalized, thermal, windproof, waterproof fabric resists punctures and tears
  • Adjustable side venting enables you to let air in to cut condensation
  • Rated to 50 degrees Fahrenheit so bivvy can be used as ultralight warm-weather sleep system

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Here's what others have to say...


Thermal vs escape Bivy

  • Familiarity:I've used it several times

The thermal will keep you a littler warmer, but you'll wake up to condensation. The escape will sacrifice some heat, but keep you dry. I like the escape better, but it comes down to preference.


For when "staying alive" is the goal

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

It's cheap, light, and waterproof. That's enough to make it worth bringing along as an emergency shelter. If your day hike turns into an unexpected overnight, especially if weather rolls in, this bivy could be a life saver. Make no mistake, though, it's not going to be a fun night. This bivy doesn't breathe, so you'll end up moist. It's also not comfortably warm below about 50 deegrees. But in above-freezing temperatures it's probably good enough to keep you alive until morning, and for the size/weight (maybe compare to a 20 oz coke) it'll have a spot in my day pack for longer hikes.

If I were buying again, I'd consider the newer "Escape" version that's supposed to breathe better.



  • Gender:Male
  • Familiarity:I've used it several times

Not talking much about breathability vs thermal losses and VBL-concept but ...

Manufacturing quality is a crap, uneven cuts, loose and rare threads with untreated ends. Main body material is very weak, ripped it just pulling the velcro.

So no wonders. A little of money, a little of bivy


Great in a pinch

  • Familiarity:I've put it through the wringer

This bivvy is great as an emergency heat boost, but not so great for every night use. I bought it based on the reviewer that said they used it every night in the summer, but that did not work for me. This thing does not breathe at all despite the vent at the bottom and the openings between the velcro closures on the side. I got clammy using just the bag in the summer, and downright sweaty when I used it to up my bag rating in the winter in a hammock. Whether it was inside my sleepbag, or my bag was inside it, I was not able to sleep comfortably. I ended up putting it between my bag and hammock and it worked well there.

As an emergency bag, there is no doubt, this thing keeps the heat in! But I would not use it again casually.


perfect for the warmer nights

    went out car camping, and found it was prefect for the night that it was not to cold.


    Warm and Soggy

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

    Originally bought this for my emergency kit. When I went on my first backpacking trip I took it along "just in case." The first night I was freezing cold, so I busted this little bivy open and put it inside my sleeping bag and was able to finally warm up. I woke up pretty sweaty. Didn't mind because at least I got some sleep. The second night, I put my sleeping bag in it. It was still warm. I woke up with lots of condensation between the bivy and the outside of my sleeping bag, I was dry. My guess is that was was in the low high 30s low 40s at night. It saved me, although I am now in the market for a new sleeping bag.

    Choosing the Right SOL Emergency Shelter

    AMK Sales rep and Professional Adventure Racer Kyle Peter outlines the differences between SOL's emergency shelters and describes when to choose each one.

    SOL Thermal Bivvy

    AMK Sales rep and Professional Adventure Racer Kyle Peter shows you the SOL Thermal Bivvy, an emergency shelter made from a more durable and comfortable material than the SOL Emergency Bivvy.

    after watching the video, I think in colder weather it would work great inside a sleeping bag, definitely stay warmer.

    after watching the video, I think in colder weather it would work great inside a sleeping bag, definitely stay warmer.

    whats the temperature rating on this if...

    whats the temperature rating on this if used as a summer sleeping bag?


    My summer sleeping bag

      Indid it is great for a warm weather sleeping bag. I use it all summer long and in the coldest winter climbing in side my winter sleeping bag