The fabric used for the bivy is Partex Sheld DV with eVent membrane which is achieved 61,000gr/m2/24h in the breathability and 431kPa in the water resistance. In addition,the fastener used is YKK AquaGuard which has a function of water stopping with PU coating in its surface.
This Bivy is designed with the open/closed zipper style for going in and out.
You can choose whether with the window type or without the window type.
There is a tieout loop in the upper shell to lift the bivy a bit with using guyline from Tarp or shelter, which makes more space inside around the face. Also it may be possible to hang from trees or branches.
all seams in Pneuma Bivy eVent are taped.
Important notice: There are the flaps in both side of which length is about 15cm and covered the fastener. They have the certain purpose to let the fastener keep open inside the flaps even in the rain to get some air for preventing from anoxia. We strongly suggest not to close the fastener completely in the bivy without window type while sleeping.