Mountain Hardwear Rock Sack Bivy - 2007 BCS

This bivy sack is great. I just got it in the mail and looks sweet. It was raining today, so I got to try it out. Totally waterproof. I have never bought a bivy sack, but htis one seems awesome. It doesn't have a zipper, which I didn't know. It has a hood with drawstrings. I will try it while camping, but I expect it will work out great. It also is lightweight and small sized. Buy it.

I have used this bag cover several times, including once in a real downpour, where it kept me dry as a bone. It is a bit narrow, but that, I guess, is the price to pay for a light-weight bivy sack. I usually use this thing with a light-weight sleeping bag, and put on all my warm clothes before getting into it--no point carrying insulation for the day and insulation for night. I haven't frozen to death yet!

This Bivy is fine if you don't want to use it on day-to-day basis. The hood is kind of narrow to get in (guess it is really waterproof for that). It is difficult to enter with a bulky sleeping bag and once inside you don't have a lot of space to close the sleeping bag and adjust the cords. It might be alright during the summer with a smaller sleeping bag - I haven't tested that yet. How ever I am not impressed with it during winter trips.

It's too small. I'm too big. Fresh air is about 18 inches away from your mouth. The only gear purchase I regret. I went with DIY replacement and am now much happier as I sleep in bivvy sack in a snow trench beneath a pyramid tarp in winter and feel bombprooof.