Breathable. Zipper design is excellent. Waterproof. Not as durable as the Alpine, but way more compact and lighterweight. Durable enough, but needs some care still (whereas the Alpine doesn't really need any care). The countless zipper pulls make it a bit hard to operate, but also a lot more versatile and practical. When you sleep with the "face section" open, I recommend tucking it inwards to avoid having the wind blowing it back up.