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Four Reasons Why People Like S.O.L. Survive Heat Reflective Thermal Bivvy

When you have to spend a night outdoors in cold weather, a bivy sack can help you keep warm and dry through insulation in that situation. It is pretty similar to bivouac shelters to cover the sleeping bag for giving protection in emergencies. You can also use it as a stand-alone sleep system to tackle rain, wind, chill, and snow. This sort of situation is common for campers, mountaineers, and adventurous people. So, keeping a bivy sack is necessary for them.

It is a little bit challenging to find out the best bivy sack for you. When you are going to find the right one, you may be overwhelmed by getting plenty of bivy sacks available in the market. To simplify your finding job, we’ve reviewed a bivy sack with its features and advantages. So, you will be able to learn more about this fantastic gear.

Review of S.O.L. Survive Heat Reflective Thermal Bivvy

The S.O.L Survive Heat Reflective Thermal Bivvy is a great gear to help you survive in an emergency. It comes with durable material, including tear-resistance, to protect you in difficult situations. It also ensures the technology of heat reflection to keep you warm during sleep at night. Again, this bivy sack is lightweight and compact so that you can carry it easily anywhere in your backpack. Besides, this fantastic bivy sack offers a variety of features. We think you should consider these features before making a purchase.

Durable Material

This excellent bivy sack is made of polyester thermal fabric, which ensures both durability and longevity. It also comes with durable tear-resistant material to use it for plenty of days. Also, it won’t shred to pieces if punctured or repaired with duct tape. Apart from these, the escape fabric makes it breathable, which is not similar to other bivouac sacks. Overall, it measures 84 x 34 inches and weighs 8.9 ounces approximately.


The bivy sack comes with 80% heat-reflections to your body to prevent heat loss and trap warm air. It is also breathable and so features a revolutionary design to keep you comfortably warm and dry. Again, the heat-reflective fabric ensures up to 15 degrees of extra warmth into your sleeping bag. Apart from these, the bivy sack offers versatility so that it can be used as a stand-alone sleep system in warmer weather.

Ultimate Protection

A bivy sack is usually used in emergencies, so protection should be the priority. This bivy sack comes with ultimate protection from harmful elements, such as water, wind, chill, rain, and many more. The waterproof and windproof features will keep you warm and dry no matter the weather condition is. Besides, it has an adjustable side venting system, which allows air to let in. You will also have excellent safety from bugs and mosquitoes.

Lightweight and Compact

This fantastic bivy sack is pretty compact and won’t take too much space in your backpack. It is also compact to fit in your day pack easily. Besides, it works as a lightweight shelter for long and short trips. As this bivy sack is lightweight and compact, you can store it anywhere. Overall, this bivy sack can be your friend in a critical situation at a challenging night.


  • Made of thermal fabric
  • Features an ultra-light warm-weather sleep system
  • Reflexes 80% of body heat
  • Works as a stand-alone sleep system
  • Provides adjustable and aggressive side venting


  • A bit too close-fitting


In short, bivy sacks are usually adopted by outdoor adventurers for activities, including ultralight backpacking, overnight kayak trips, hunter’s strike camps, and many more. A bivy sack has so many uses, ranging from protecting your sleeping bag to acting as cold weather survival gear.

However, when you turn the bivy sack out, it doubles as an emergency blanket. So, you can wrap yourself to get heat reflective warmth into your sleeping bag at night. Still, if you’re looking for the right bivy sack, the S.O.L. Survive Heat Reflective Thermal Bivvy may be a suitable option for you.

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