User Review: Outdoor Research Alpine Bivy
I recently purchased this bivy after nearly giving up on bivy sacks all together. My problem has always been condensation. In a chilly downpour or white-out when the only place you can go is your shelter, bivy sacks can be the worst.
However, the Alpine Bivy, I think it's more than up to the challenge. The Gore Tex breaths great and offered no condensation. The pole is a luxury worth the 2-oz price as it makes spending any amount of time inside the shelter enjoyable.
I agree with the previous review that this bivy has its faults: weight and price. If you are really wanting to count your ounces I would go with a tarp. But a tarp in winter? When you need the protection, this bivy is there. When you don't, why are you using a bivy?
The packed size is pretty nice as well and fits nicely in my low volume pack.
Bottom line: If you don't mind the hefty price, this bivy is a nice winter shelter when protection from the elements is premium.