To Bivy Bag or Not to Bivy Bag

I, Bernie Harberts, did not use generative AI to write or illustrate this article. Spell check and grammar check, yes. AI, no.

My brother Christian recently asked me in the Comment section, “sleeping question for you: when do you set up the bivy, as opposed to the big tent? Is weather a factor, time?”

Here are some answers bro.

The Bivy

A bivy (bivouac) bag is just a sack that keeps the elements and bugs off your face and sleeping bag at night. I describe mine to people as a body bag with a mosquito screen. A collapsible hoop – like a miniature version of a tent pole – keeps the bag and screen off your face.

It lives on the top of Brick’s pack saddle, between the Army rucksacks and my top hat.

If I had to choose between sleeping in the bivy or the tent, I’d choose the bivy.

The decision comes down to 2 factors – weather and time.

Weather

Heat

The bivy bag is perfect in cool (75 to 32 degree weather). It can be used in much colder weather. Mountaineers use them in hella cold conditions. The only trick then is to make sure you breather out through the bag, in to the open air (as opposed to pulling the whole bag over your head). Even though most bivy bags are made of breathable fabric (Gortex, etc) in really cold air, your breath and body moisture condenses inside the bag. This can lead to a soggy bedding.

They’re not so great in hotter weather. Anything above 80-degrees and they turn in to an oven roaster bag. It’s no fun lying in your bivy bag sweating up your sleeping bag….then deciding you need to pitch your tent to cool down. By then, the mosquitoes will have a field day with your exposed flesh as you fumble with your dome home.

Rain

Unless you’re exposed to a long soaking, the bivy bag will keep you dry through showers and light rain and fog. If I think it’s really going to storm, I often stretch my army poncho over the head of my bivy. Or I just go ahead and set up my tent.

Time

The bivy is quicker to pitch then a tent.

I store my sleeping bag in my bivy bag. So I need to open it up every night regardless of whether I sleep in my tent or not. That’s why, often, I just go ahead and pitch the bivy and forget about the tent.

Pitching the bivy is quicker than the tent. One stake to keep the hoop pulled taught. 2 stakes at the foot if you feel you need them. 2 stakes at the head if you really plan on thrashin’ the night away. Takes me no more than 5 minutes to pitch the whole setup – and that’s using all the stakes.

The real gain in time is breaking the sucker down. Mornings, I pop up a few stakes and roll the bivy up. Jam it in to the stow bag and I’m done.

Again, if I had the tent pitched I’d have to do all this anyway.

Those few minutes saved, crazy as it sounds, really help the mules and I get a good early start. That’s especially important in hot weather.

That’s a Wrap

Hope this answers your question bro!

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