The bivy bag offers no comfort like the tent, but it is a lot lighter. A tent offers the advantage that once you’re inside the tent and it is closed, you have your own, small, private home in nature. You can unpack your things in the tent, change clothes, study the hiking map, etc. But that is perhaps the disadvantage of the tent. For as long as you sit in the tent, you do not get as much of nature around you as when you lie in the bivouac under the open sky and look at the stars, while you may even be suspiciously eyed by an owl.

The tent definitely offers better protection against insects, especially the annoying mosquitoes and sometimes also against ticks. From a psychological point of view, the tent may also give you the feeling of security due to the enclosed space. In contrast, a bivy bag is much more flexible, because the tent needs more space to build, some tents must also be attached. With a bivy sack you can just lie down everywhere and you do not have to worry about what will happen if, for example, a pole should break, as it can be the case with a tent.

A bivy bag does not offer as much space as a tent and sometimes it is a bit hard to get out of the bivouac, but the bivvy bag gives you the absolute feeling of being in nature and a chance to miss nothing.