I am looking for a two person bivy that I can use on hikes even high up in the mountains. All the two person bivys I found are only emergency bivys and thus not breathable. I would love to use one with my gf because we have sleeping bags that can be put together. The reason I need a bivy is, that tents are forbidden, while bivys are legal above the trees in the mountains. What bivys do you guys use for hikes?