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Waking up to find your bivy sack in a puddle can bring your body and mind to the breaking point. That's why The North Face developed the three-season Asylum Bivy with highly water-resistant and breathable DryWall fabric. New for 2011, this lightweight, single-wall fabric prevents spring showers from getting in thanks to its fully taped seams and PU-coated floor. In addition to repelling the elements, DryWall fabic is also exceptionally breathable to prevent unwanted condensation during summer nights.

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Really good for dry climates

  • Familiarity: I've put it through the wringer

Footbox venting is really good. Had very little condensation on my bag at the feet when i usually have more in other bivies and even tents

Had plenty of room with a 2" pad to move around.

Technically it only really needs 2 stakes. one at the front and one at the bottom. I usualy attached a line to the head poles and ran it past the front stake to pull the bivy more tight, which made the side walls less droopy. The poles basically provide enough structure to not need stakes in most circumstances on each side.

This can withstand rain for about an hour. Then then next hour it will get slightly worrisome. In the next hour, you will realize you are in a "situation" especially if you have a down bag. One person talked about seam sealing theirs and testing it in their yard, but the problem is that this experiment does not take into effect a live body sleeping inside, breathing and perspiring. My experience is that in a long rain, sure, it was leaking at the seams, but the fabric wet out too. Also, it is nearly impossible in my opinion to not have some part of your sleeping bag touching the side walls, especially if you are side sleeper, in which case your knees and sometimes butt will be touching most of the time (and Im a small guy). This will increase the leaking issue a lot and unless you can lay perfectly still on your back in the same position, your gonna touch the walls at some point.

This bivy also has been weighed by others on reviews (not on this site) and it seems to weigh 4 oz more then advertised. This makes this a pretty heavy non waterproof bivy.

has room at the head for a 38 liter pack and under. perhaps larger but dont know.

Not waterproof...

  • Familiarity: I've used it once or twice and have initial impressions all(!) I bought this bivy, thinking it would handle rain... It didnt... I put it up in the garden overnight while it was raining... It was a LAKE inside the bivy when I looked inside the next day. I like the weight, but now I have to buy a tarp...

I have now used a seam-sealer on all of the seams on the bivy. They are not taped, so the water is coming through the seams. I let the bivy stand in my garden for about 6-7 days. It`s been snowing, raining and some sun these 6-7 days. I`ve been checking the bivy daily and the bivy is as dry as it can be... So... If you buy this bivy and have plans to use it in rainy conditions, buy a seam-sealer and seal all of the seams... Worked for me :)

First initial impression...

  • Familiarity: I've used it once or twice and have initial impressions

Just received this in the mail for my wife. She set it up in a matter of a few short minutes with no problem at all... feels sturdy & looks great! Plenty of room compared to a typical bivy but at a faction of the weight & size of a tent. Exactly what she was looking for & she can not wait to get out & try this baby out!

We will keep you posted on how it performs & holds up!!

Is there any sort of venting? Like at the...

Is there any sort of venting? Like at the feet or do you have to crack the door for ventilation?? Thanks in advance!