As I will be handing in my Masters dissertation next month I have begun to once again consider what MYOG projects I want to embark on. A friend who I usually do overnighters with is more bushwacker than lightweight backpacker. I've been slowly trying to convert him some by making the occasional item for him. I was considering making him, and possibly even myself, a fully waterproof bivy bag to take on overnighters. We don't go if there is lots of rain forcasted. It would make things simpler than taking tarp and bivy.
In my looking for a suitable WPB material for the top that was avaliable to the MYOG crowd I came across this since I'm living in England now.
It seems the lightest of all the materials I've found easily avaliable, though I may have missed some. So I thought it may be of innterest to someone on here possibly.