I am going to be purchasing a bivy with a Cuben fabric bottom in the near future and I was wondering if any of you can comment on the durability of Cuben when used for the bottom. I realize that Silnylon has better puncture resistance than Cuben. Assuming I am careful with site selection, do you think a Cuben bottom will pose a problem at all? If anyone has experience with Cuben when used for a bivy bottom, please share your thoughts. Thanks in advance for any input.
-Sid

