I have several bivvies in my collection. I like them because of their simplicity, quick setup and takedown, as well as the low profile of this type of shelter. I bought the Mil-tec to use in rain and mud. Even before buying, I knew it was quite rugged and heavy, but it's also made from solid material and, additionally, it's cheap. These features made me decide to get it for use in tougher weather conditions. I like the stiffness of the material in its construction and the way it's shaped behind the head. It creates a sort of tall wall, which makes it so that the pillow (I usually use my backpack for this) doesn't slip out from under my head and outside of the bivvy. There is also quite a lot of space there, which is different from my other more expensive bivvies that just have a hood at the head area. In the Mil-tec model, it isn't cramped; you can freely move your arms or turn from side to side. Of course, it's missing a mosquito net, so you aren't protected from insects—chemicals are the only solution. In the rain, the bivvy works well, but I intend to test its waterproofness during a truly heavy downpour. Condensation happens, but it doesn't bother me, and besides, the bivvy isn't tightly sealed, so it's easy to ventilate by making an opening near the head. Overall, there’s nothing to complain about. It's a pretty decent product. If someone likes bivvies or wants to try sleeping in this kind of shelter, Mil-tec offers a sturdy product at an affordable price.
