Best Bivy Sacks

Updated December 2021
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BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. Read more  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.Read more 
Bottom Line
Pros
Cons
Best of the Best
S.O.L. Survive Outdoors Longer Lightweight Emergency Survival Sleeping Bag Sack
S.O.L. Survive Outdoors Longer
Lightweight Emergency Survival Sleeping Bag Sack
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Customer Favorite
Bottom Line

High quality and comfort make this bivy sack worth it.

Pros

High water-resistance, durable fabric build, high-quality seams, stitching, and zipper make this a sturdy choice. Olive drab green, so it blends in with the environment. Resists punctures and tears and reflects back 70% of body heat.

Cons

Is a bit tight and small; may not be ideal for taller users.

Best Bang for the Buck
Esky Emergency Sleeping Bag
Esky
Emergency Sleeping Bag
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Most Comprehensive
Bottom Line

Much more than just a standard bivy sack, this comes with extra perks.

Pros

Lightweight and waterproof, this bivy sack retains heat well and includes a compass and whistle for additional survival support. Sealed seams and tear-resistant coating keep you dry and warm in emergency situations.

Cons

Compass may not be incredibly accurate.

Leberna Emergency Survival Mylar Thermal Sleeping Bag
Leberna
Emergency Survival Mylar Thermal Sleeping Bag
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Bargain Pick
Bottom Line

A good, effective choice, this set of 2 bivy sacks is also an inexpensive option.

Pros

Available in a 2-pack; each bivy sack comes with its own carry bag. Constructed of durable, double-sided Mylar material, which is waterproof and windproof. Reflects back 90% of body heat and packs up small and light.

Cons

There are no zippers or cushioning with these.

Go Time Gear Emergency Thermal Sleeping Bag
Go Time Gear
Emergency Thermal Sleeping Bag
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Feature-Packed
Bottom Line

A rugged, mid-priced option that is big enough for larger user and comes with extras such as an emergency whistle.

Pros

Comes with a nylon sack for storage, a 120-decible emergency whistle, and a 550-pound nylon-core drawstring. Ultra-lightweight and compact. Its 26um Mylar resists tears and punctures while reflecting 90% of body heat back to you.

Cons

Bag isn't very breathable, allowing condensation to form on the inside.

Survival Frog Emergency Survival Compact Sleeping Bag
Survival Frog
Emergency Survival Compact Sleeping Bag
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Durable & Rugged
Bottom Line

Works very well to preserve your body heat in an emergency, as well as guard against wind and water.

Pros

Available in Safety Orange or Tactical Green, the material is an ultra-lightweight, reflective polyester film that reflects 90% of your heat back to you. Tear-resistant, as well as windproof and waterproof with reinforced, taped seams.

Cons

Some reports that the material here is very thin and rips easily.

HOW WE TESTED

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

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59
Models
Considered
60
Consumers
Consulted
10
Hours
Researched
Category cover

A bivy or bivouac sack is a sleeping bag with waterproof, windproof nylon covering. It can keep moisture and cold out even in snowy weather. It’s useful to hikers and climbers and for survival during natural disasters. Bivy sacks are made to withstand rough weather conditions, though some are more durable for repetitive use while others are suitable only for emergency situations. Bivy sacks tend to pack up small and weigh little for easy transport over long distances. All help keep your body heat in with some having body-heat reflection ratings between 70% and 90%. Not all bivy sacks can accommodate tall or large body sizes. Some come with extra survival tools like a compass or emergency whistle.

Other Products We Considered
The BestReviews editorial team researches hundreds of products based on consumer reviews, brand quality, and value. We then choose a shorter list for in-depth research and testing before finalizing our top picks. These are the products we considered that ultimately didn't make our top 5.
Farran Outdoor
Emergency Bivy Sack Rescue Kit
Zmoon
Waterproof Lightweight Thermal Bivy Sack (2-Pack)
Outdoor Designs USA
Emergency Waterproof Bivy Sack
Mezonn
Emergency Survival Bivy Sack
Vijoly
Emergency Bivy Sack with Safety Whistle
Esky
Waterproof Lightweight Thermal Bivy Sack
Q's INN
2 Bivy Sack Emergency Sleeping Bags Compact
Sierra Designs
Backcountry BIVY Long
Survival of the Fittest
Mylar Bivy Sack Portable Prepper Gear
ACVCY
Lightweight Emergency Bivy Sack Survival
See more
Our Top Picks
S.O.L. Survive Outdoors Longer
Best of the Best
S.O.L. Survive Outdoors Longer
Lightweight Emergency Survival Sleeping Bag Sack
Bottom Line
High quality and comfort make this bivy sack worth it.
Shop Now
Esky
Best Bang for the Buck
Esky
Emergency Sleeping Bag
Bottom Line
Much more than just a standard bivy sack, this comes with extra perks.
Shop Now
Leberna
Top Pick
Leberna
Emergency Survival Mylar Thermal Sleeping Bag
Bottom Line
A good, effective choice, this set of 2 bivy sacks is also an inexpensive option.
Shop Now
Go Time Gear
Top Pick
Go Time Gear
Emergency Thermal Sleeping Bag
Bottom Line
A rugged, mid-priced option that is big enough for larger user and comes with extras such as an emergency whistle.
Shop Now
Survival Frog
Top Pick
Survival Frog
Emergency Survival Compact Sleeping Bag
Bottom Line
Works very well to preserve your body heat in an emergency, as well as guard against wind and water.
Shop Now