There was a time, a few years back, when the bivy sack vs tent discussion wasn’t even a debate. Tents were far superior to bivies at that point.

For one thing, bivy sacks were nothing more than glorified trash bags that were too tight and claustrophobic, and bedeviled by condensation. This made them nearly impossible to use. The conditions were so bad that short of heavy rainfall, you were better off sleeping out in the open than using a bivy sack.

Tents, on the other hand, were remarkably better. They were more comfortable, offered better protection against the elements, and were roomier, doing away with the condensation issue.

The problem with tents is that they are heavier, more cumbersome to set up, and, in many cases, more expensive.

Over time, the gap in design, functionality, and benefits between these two pieces of outdoor gear has all but disappeared. Today, there’s hardly any difference between a high-quality one-man tent and a bivouac bag.

Both can be comfortable. Bivy bags no longer have too much of a condensation problem, and they are both ultralight while offering maximum protection against the elements.

Now we can have a meaningful bivy sack vs. tent discussion without technology and features unnecessarily favoring one side of the argument.

A majority of outdoor enthusiasts are familiar with tent camping. However, bivy sack camping is slowly gaining popularity because it presents a simpler, more minimalistic approach to outdoor adventuring.

If you haven’t gone bivy sack camping yet, then you should try it. At the very least, having a bivy as part of your camping gear should be on your priority list. It allows you to choose the kind of sleeping system you can use in the wilderness.

Let’s take a quick look at the similarities and differences between a bivy sack and a tent.

The Difference Between a Bivy Sack and a Tent

Bivy Sack

A bivy sack, or bivouac bag, is a small bag that easily goes over your sleeping bag to keep you warm and dry while camping. Most bivies are made out of waterproof and breathable material.

Bivies are easy to use, lightweight, and easy to pack away. All you need to do is take it out of the sack, spread it out on the ground, and zip yourself in for a comfortable night’s sleep. All this can be achieved in a matter of seconds, which is why bivy sacks are often used as emergency shelters against bad weather.

On most occasions, when using a bivy, especially if it isn’t a structured bivy such as this Outdoor Research Helium Bivy that has a wire allowing you to create more room for your head, it’s important to bring a tarp. You can use the tarp to create extra shelter over your bivy so you can sit up, eat, or even read should the weather turn. 

Outdoor Research Helium Bivy

Outdoor Research Helium Bivy- Grey


Tents, on the other hand, are more houselike. They are roomy, offer a higher level of comfort than a bivy would, and even more protection from cold weather and the elements in general.

The problem with tents is that they are bulkier than bivies, even though many ultra-light tents are on the market today. Tents take longer to set up and take down. When it comes to using a tent, you need some outdoor skills, which include camp selection.

Unlike a bivy that can be used anywhere, a tent needs to be pitched in the right place. The setup process takes more time than it does when using a bivy.

That being said, tents offer better protection against bad weather and more comfort. This is particularly true if you intend to spend several days out in the wilderness exploring the same location. A robustly set up camp with a tent with warm sleeping bag will help keep your gear dry, give you more room to do much more than just lie down, and offer you better functionality in terms of shelter.

man enjoying coffee on the mountains

Despite all these advantages, tents do have some drawbacks, even ultralight ones. If you intend to go on long trips through rugged terrain, you might be forced to choose between the inconvenience of the extra weight and the robustness of your tent shelter. Long-distance hikers often complain about rips in their tent material and other issues like broken poles.

These are all problems that you wouldn’t face when using bivy sacks. In fact, in many cases, if a tent can’t be erected as designed, it won’t offer you as much protection or comfort. In which case, you are better off with a bivy anyway.


Both a bivy and a tent are highly functional pieces of outdoor gear. However, a bivy would be your best bet if you are looking for basic functionality. With a bivy, you can set up camp anywhere in a matter of seconds.

Additionally, if you choose one like the Sol Escape Bivy, which is not only a superlight bivy but also reflective and warm, you have the perfect emergency shelter. With its bright orange color, rescuers can spot you even under a thick canopy.

Survive Outdoors Longer 70% Reflective Escape...

S.O.L. 70% Reflective Escape Bivvy |

Ultimately, the bivy sack is all about functionality. You can deploy and pack it up quickly, giving you more time to explore the great outdoors or stay protected whenever the weather turns.

Tents are also quite functional. In most cases, if you are traveling with a lot of gear, your best bet would be to carry an ultralight tent. Despite being a bit more of a hustle to set up, a tent gives you enough room to stretch out and move about while inside it and also fits in with most of your gear. This keeps that gear away from the elements.

With a tent, you can do light work, such as edit your images or even reply to emails on a small handheld device if you wish to while in the wilderness. Something you couldn’t do in a bivy unless you first erected a tarp over it. Even then, bits of the bivy or workspace will be exposed.

Finally, a tent gives you a bit more privacy than a bivy.


Bivies are extremely basic, and the fewer features a bivy bag has, the more it’s actually functional for its intended purpose. Most bivies have only one feature: the closure of the mouth, which can either be a zipper, a drawstring, or Velcro. In some cases, it can be an sleeping bag with overlapping hood.

There are some bivies; however, they come with extra features. Bivies such as this Outdoor Research Bug Bivy come with a net that keeps the bugs away as you sleep. It also has a wire to keep the mesh away from your face.

Pockets and Bug Mesh

You will often find bivies with additional features, such as a pocket near the opening where you can store some handheld gear and a spotlight.

Like most tents, there are some bivies, such as this Sierra Designs Backcountry Bivy Bag that has a waterproof, breathable top fabric and a waterproof, non-breathable bottom, which makes it more robust and resistant to any wet ground.

Sierra Designs Backcountry Bivy Bag for...

Sierra Designs Backcountry Bivy Bag for... |

Tents, on the other hand, need a lot more features as they can be used for a wider variety of activities, including reading, eating, sitting up at night, and so on. Certainly, a good lightweight tent should have some key features, including:

  • Hooks for holding up your lanterns or spotlight
  • Side pockets made of mesh are for gear storage
  • A rainfly to improve its water-resistance
  • A vestibule to increase its storage space
  • Vents for better ventilation
  • Inner tents should have bug meshes (no-see-um) to keep out the creepy crawlies

With both a tent and a bivy, you can choose any color you want depending on what you would like to achieve. Bright colors like orange will help you remain visible, or you could choose to blend into the environment with dull colors such as jungle green.

women preparing coffee during morning

The Positive and Negative

The key advantages of a bivy bag are:

  • Simplicity
  • Ease of use
  • Cheapness
  • Versatility
  • Lightweight

The main disadvantages of a bivy include:

  • You may need to add a tarp for better weather protection
  • You need expert outdoor skills to use them in bad weather
  • Does not provide adequate protection against extreme elements

The key advantages of a tent include the following:

  • More comfortable
  • Weatherproof
  • Roomy
  • Insect proof

The key disadvantages of a tent include the following:

  • They are a bit more expensive
  • They take some time to set up and bring down
  • You need to find a proper campsite

Both have their own advantages and disadvantages. If you were forced to choose one and not the other, then go with what serves your needs the most, depending on where you are going camping.

A bivy sack might be a great idea if it’s a quick hike up your local mountain ridge. It’s lightweight and easy to use, providing the necessary protection against the elements.

However, if you are off on a long camping trip into the unknown, a lightweight tent might be better, especially if you bring a lot of gear that will need storage away from any potential rain. In an ideal world, you should have both.

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Last update on 2024-04-14 / Affiliate links / Images from Amazon Product Advertising API