The North Face Flight Bivy

This bivy sack is okay. I ordered it just before my trip to Yosemite for 10 days without testing it. I slept in snow with it and used it during rain showers.

The best part of this bivy sack is that it weighs almost nothing, packs to nothing, and you don't have to do a lot of setup. I loved the setup part. It takes less that a minute to setup and take down. It should also add approximately 15 degrees to your sleeping bag. It is completely waterproof. It rained, and the rain puddled on top of the bivy sack without wetting my sleeping bag.

I bought it over other sacks based upon its ratings and reviews. However, anyone who says that this bivy sack does not get condensation is probably not telling the truth. I was in Yosemite in all kinds of weather, rain, snow, warmer temperatures, etc. On some nights I left it completely open, and on others I zipped it 100%. The bottom line is that it got condensation on the walls every single night. I had to leave it and my sleeping bag out to dry for at least 30 minutes to get it to dry. If others in your party are get-up-and-go types, then you might have an issue.

Also, if it rains frequently and everything around you is wet, you won't be able to dry your sleeping bag and bivy sack. I do NOT recommend for someone with a down bag due to the condensation. My bag is synthetic, and I was able to stay warm.

The other negative aspect, which is dwarfed by the condensation issue, is that there is no netting for mosquitoes. You just have to close your bag.

There is a small place at the head of the bag where I put my shoes and extra clothing. I am 5'5 and it fit my extra stuff. I did not put my backpack in the sack.

It's easy to get your sleeping mat and sleeping bag into the sack. My mat was rectangular and I was not able to put it all the way down to my feet because it wouldn't fit into the end of the bag.

I bought this bivy to save weight on a recent trip to South East Utah. It packs small and the fabric was tough enough to handle me moving on the ground to get comfortable. I don't think it would rip easily.

The zippers are wonderful with the glow in the dark grabs. It also zips down really far to make it easy to get into and out of. My foam roll fit inside easily had to roll the very bottom to fit but it worked. I slept with the zipper a little bit open the first night for some fresh air, and the only condensation was in the storage area near the head. My sleeping bag was completely dry.

The second night it was a little bit colder and I had it zipped completely shut. In the morning there was no condensation at all. The relative humidity was low outside but just from my breath I thought it would be wet, but was wonderfully dry.

The extra room near the head has room for a jacket and shoes. It also helps with claustrophobia.