If this is not allowed, please delete.
I have some extra Tyvek left over and thought I would see if any other hikers needed some. The roll is 3' wide and I can make it as long or short as you need.
3' x 7' $10 shipped in the USA.
Outside the USA, I'm sure we can figure something out.
I think I have enough to make 14 - 3' x 7' sheets
Just want to help out hikers, so you don't go buy a full roll. Like I did.