The 10 Best Bivy Sack in 2019 – Recommended By Experts

A bivy sack is an abridged version of bivouac sack. It is pretty similar to bivouac shelters but is smaller and snug. It is usually used to cover the sleeping bag and give protection from chill, rain, snow, and wind by providing warmth through insulation.

But most of the time a sleeping bag is not even required. It can be used as a stand-alone sleep system. The prime purpose of a bivouac sack is to tackle and survive emergency situations.

The unexpected difficult situation where an individual gets stuck in a place during calamities, need to cover and protect the body from moisture and keep the body warm as well to stay alive. Such situations are very common, especially for adventurous individuals. So, keeping a bivouac sack is a must for them.

Reviews of the Best Bivy Sack

Our review will be helpful for those individuals who are used to visit dangerous places and inclined to face hazardous situations. We are talking about adventurers, hikers, mountaineers, etc.

Bivy sack is designed in a way that people can take rest in such situations. So, it is somewhat rational for all to keep one sack in the handbag or the glove compartment of the car.

But for adventurers, a bivouac sack is as essential as a basic first aid kit. And the good news is there are some bivouac sacks which are so compact that they fit in the palm of a hand. They can easily fit in the first aid kit as well. Today we are going to review the best bivy sack.

1. S.O.L. Survive Heat Reflective Thermal Bivvy

Best Bivy SackSOL’s metalized non-woven fabric thermal bivy is durable, lightweight and reusable. It weighs 9 oz. It is small and compact, can be stored anywhere, barely noticeable and the first thing which might come handy in an emergency.

The material used to construct it provides 100% waterproof protection from the elements. The thermal material reflects 80% of the body heat.

If used in a sleeping bag it can add 5-10 degrees of warmth and comfort. It helps to keep the user warm and dry in the moistest condition.

It can be used individually without the sleeping bag as a stand-alone sleeping system in warmer weather. It provides the right amount of warmth.

The escape fabric also makes it breathable, unlike other similar bivouac sack.  It is rips and tears resistant. It will not shred if punctured and repaired with duct tape.

It is quiet and doesn’t make a crinkling sound. It has adjustable side venting which allows air to let in and ensures cutting the condensation.


  • Made of hard-wearing thermal fabric
  • An ultra-light warm weather sleep system and rated to 50 degrees Fahrenheit
  • Reflexes 80% of body heat
  • Works as a stand-alone sleep system
  • Adjustable and aggressive side venting


  • A bit too close fitting


2. Military Modular GoretexBivy Carry Sack

Best Bivy SackMilitary modular sleep system is a 4-piece military sleep system which weighs approximately 10 to 11 pounds. The 4-piece includes an OD green, an intermediate sleeping bag, a bivy cover, and a carry sack.

It is a complete set of the modular sleep system, and each piece of the product are made of high-quality materials. The main sleeping bag is an olive drab patrol sleeping bag.

It is lightweight and can handle 30 to 50 degrees comfortably. The intermediate sleeping bag is black. The Gore-Tex bivy cover is woodland camouflage patterned and 100% waterproof.

It is durable and lightweight. All the 3-piece can be used individually or together depending on the weather conditions. It comes with a high-quality black compression sack.

It is the warmest sleep system available in the market. It can be washed. Though it is bulky but and expensive, it is worth every penny. It is perfect for surviving in extreme-cold conditions.


  • A four-piece military sleep system
  • Bivy cover made of Gore-Tex
  • Lightweight and breathable
  • 100% waterproof
  • Washable


  • Too expensive


3. Tennier Woodland Camouflage Waterproof Bivy

Best Bivy SackThis woodland camouflage bivy sack is made of tough and quality materials. The material used to construct it is Gore-Tex, and it is waterproof. The sack remains completely dry even if it is used during heavy rainfall.

It weighs less than three pounds. It is approximately 83″ long, 36″ wide. The width narrows around the feet area and is approximately 29″. The moisture-vapor-permeable material provides a good breathing capacity.

It tackles the condensation issue pretty fine. All the seams of this bivy cover are heat sealed. It is specially designed for covering patrol and intermediate sleeping bags. It comfortably fits in the compression sack.

The zipper on the right side of the sack goes way past the middle of the bag providing plenty of room for quick, easy and comfortable entry and exit. It also helps in the smooth covering of the sleeping bags. It is made in the USA.


  • Made of Gore-Tex
  • Woodland Camouflage design
  • Waterproof
  • All seams are heat sealed
  • Made in the USA


  • Comparatively heavy


4. Tact Bivvy Compact Ultra Lightweight Sleeping Bag

Best Bivy SackThe Tact Bivvy is a thermal survival blanket sleeping bag. It is made of HeatEcho reflective polyester film and weighs just 4.8 ounces. It is very lightweight and thin but extremely sturdy.

It is tear-resistant as well. It easily fits into a small stuff sack which comes with the blanket itself.  It is compact and can be packed in the survival kit without occupying too much space.

It is green in color which blends with the surroundings and helps the survivor to remain hidden. It is perfect for secret missions. The HeatEcho material reflects 90% of the body heat and provides perfect warmth.

It is waterproof and windproof. The reinforced taped seams make it more sturdy and durable. The seams create weather-resistant barriers to overcome extreme-cold conditions.

It can be used as a sleeping bag liner also. As a sleeping bag liner, it increases the body temperature up to 20 degrees. It includes a carabiner clip, an emergency whistle, and a drawstring.


  • Compact and ultra-lightweight; made of HeatEcho reflective polyester film
  • 100% waterproof and windproof
  • Reflexes 90% of the body heat back
  • Easy to use and convenient to store, fits in the palm of a hand
  • Comes with a six months ‘Any Reason’ refund guarantee


  • It can be a little larger and thicker


5. Go Time Gear Life Bivy

Best Bivy SackLife Bivy is a one person 3 in 1 bivouac sack. It serves as an emergency blanket, a survival shelter, and also a bivy sack. 26um extra-thick mylar material is used to make it. It has a tear and puncture resistant coating. It weighs just 4.1 ounces. It is very lightweight and compact.

It comes with a 120-decibel emergency whistle, and a 550lb nylon core patent Para-Synch Technology drawstring The whistle helps to alert the rescuers up to 1-mile away, and the drawstring is a great tool to start a fire or secure and repair gear and also in building an emergency shelter. Its bright orange color helps the rescuers to find the survivors.

It is waterproof, windproof and durable enough to stand up in harsh weather. The seams are sealed. It comes with a waterproof and long-lasting stuff sack and perfectly fits in the bug out bag or gear and survival gear or kit. These are all reusable.


  • Ultra lightweight and compact; easily fits in the palm
  • Made of extra thick tear and puncture resistant polyethylene
  • Reflects 90% of the body heat
  • Waterproof and windproof
  • Comes with a 120-decibel emergency whistle and patent Para-Synch technology drawstring


  • Need to take extra care to make it last


6. Delmera Emergency Survival Sleeping Bag

Best Bivy SackDelmera Emergency Survival Sleeping Bag is designed by NASA for space expedition. It is an ultra-lightweight and compact sleeping bag. It is made of durable 26um extra-thick mylar material.

It also has a tear and puncture resistant coating. It weighs 4.6 oz. This bright orange bivy cover is easily noticeable during search operations.

The heavy-duty aluminized PE interior material helps to resist rain, wind, snow and other external impacts. It is tough and doesn’t tear or shred easily.

It provides excellent insulation performance in all weather conditions. It reflects and retains 90% of body heat. It is used to prevent and counter hypothermia and to cover injured victims to help reduce shock.

It is not only a best bivy sack but also serves as an emergency blanket and survival shelter. It comes with a nylon stuff drawstring bag sack and very easy to store. It can be stored in the survival kit or the glove box. It offers a 100% money back guarantee.


  • Constructed of 26um extra-thick mylar material
  • Light and compact, easy to pack
  • Waterproof and windproof as well
  • Originally designed by NASA
  • Covered by a 100% money back guarantee


  • Has condensation issue


7. ACU Digital Bivy Cover

Best Bivy SackACU Digital Bivy Cover has made its place in our best bivy sack list not just because of its high-quality but also due to its distinct design. This particular bivy cover has an ACU digital camouflage design which is very different from the regular olive drab camouflage patterns.

It is 80 inches long and 30 inches wide and made of Gore-Tex. It is pretty thin and extremely lightweight. It is made of breathable material. It is designed to cover patrol and intermediate cold weather sleeping bags.

It approximately adds 10 t0 15 degrees of warmth if used to cover a sleeping bag. It can be used alone as well in warmer condition. The outer layer is 100 percent waterproof and windproof. It is a non-flammable sack. It can be washed in machine hence reusable.

It has a 2-way nylon zipper.  The zipper is a non-locking slider thus able to self-repair if jammed. The zipper allows top as well as bottom ventilation.


  • Army Combat Uniform (ACU) digital camouflage design
  • Nonflammable
  • 100% waterproof and windproof as well
  • Two-way nylon zipper provide both top and bottom ventilation
  • Washable in machine


  • Might seem a bit on the pricey side


8. MyLifeCare Emergency Sleeping Bag

Best Bivy SackMyLifeCare is a lightweight, quality crafted and durable sleeping bag. It is made from mylar reflective polyester film. It is 4.1 ounces. The 5 black hardening bands increase the durability.

It guarantees longevity and sturdiness. It is pretty thick and able to tackle extreme conditions like heavy rain, blustery and snowfall. It is bright orange so easily findable.

It can increase the body heat up to 20 degrees. It retains the body heat inside the bag and reflects 90% of the body heat. It is reliably waterproof and windproof.

It includes a stuff sack, an emergency whistle, and a nylon paracord drawstring. The stuff sack helps to store it anywhere without engaging colossal space. It also makes it easy to carry.

The 120-decibel whistle can alert the rescuers from far away. The 550lb nylon core paracord drawstring can be used as a tool to start a fire or building a shelter. It comes with a 6 months money back guarantee.


  • Made from durable reflective polyester film
  • Extremely lightweight, compact and quality crafted
  • Retains the body heat sealed inside and reflects 90% of the body heat
  • Comes with an emergency whistle and paracord drawstring
  • Waterproof and windproof


  • Not breathable


9. US Army Military Woodland BIVY

Best Bivy SackIt is a genuine US Military Issue bivy sleeping bag cover. It is lightweight and made of Gore-tex. It has a woodland camouflage pattern. It is 84 inches long and 35 inches long at shoulders.

The length narrows at the bottom and measures 23 inches at feet. It is waterproof and windproof. It provides the right amount of warmth and keeps the user dry.

The seams are heat sealed thus retains the body heat inside. This one is breathable. It pretty much controls the condensation successfully.

It has woodland camo pattern good quality zipper which is covered by the snap storm flap. It is made for the US Military modular sleeping system and is a component of the 4-piece modular sleep system.

It can be used to cover the modular bag and also can be used alone as a bivouac sack. It easily fits almost all the commercial sleeping bags hence versatile.


  • Woodland camouflage color and pattern
  • Made of Gore-Tex
  • Waterproof and windproof
  • Breathable
  • Fits most commercial sleeping bags available in the market


  • Pricey


10. SOL Escape Lite Bivvy

Best Bivy SackThis bivvy is made of SOL’s proprietary Escape fabric. As the name suggests, the escape fabric lets the moisture to escape at the same time and keeps the rain, snow, and wind on the outside.

It is featherlight and weighs 5.5 ounces. It doesn’t have a condensation problem which is a big issue found in many similar liners. It is made of breathable material.

The bright orange color is easy to find during rescue operations.  It is wind and waterproof. It retains the body heat inside. It reflects 70% of the body heat. It is small and compact, so very easy to store in a survival kit or gearbox.

It can be used as a liner to cover the sleeping bag which adds a couple of degrees to the level of warmth. It can be used alone during the summer season and also is an emergency bivouac sack. It is made in the USA.


  • No condensation issue
  • Made of SOL’s proprietary Escape fabric
  • Breathable, windproof and water resistant
  • Lightweight and compact
  • Reflects 70% of the body heat


  • Insulation could have been better


Final Words

With all the above analysis and assessment of all the ten bivouac sacks, we came to the epilogue of our best bivy sack review. These emergency covers might prove to be life-saving during extreme conditions.

Most of them are pretty affordable and compact and can be bought and stored easily in a gearbox, survival kit, handbag or even in the pocket.

It is an emergency survival tool indeed for campers, hikers and mountaineers. They are ready for vigorous use and protects in every season especially in extremely cold conditions.

For an ideal bivouac sack providing the right amount of warmth and retaining the body heat is the primary motive, other features are secondary.

We have reviewed a variety of bivvy covers – variety in term of colors, patterns, features, price, extra tools, multiple purpose use. So, we are very hopeful about providing the right information. All that is needed to get a clear idea on bivouac sack is present in our review. We sincerely hope, it will be a great read for our readers.


10 Best Bivy Sack



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