If you are talking about Coroplas, it's not heat shrinkable. It's a bit less flexible than good corrugated cardboard. But, will last for years in the outdoors.
Lexan - Wikipedia, the free encyclopedia
Lexan is a very hard plastic. Many times it's used to provide safety shields
on power tools and bank teller cages.
In thin sheets, it can be sawed up and used for all sorts of applications.
But, since it's glass-like,
the thicker sheets (1/8 to 1/4 inch) might not
be best thing for under body shields. Put in a screw too tight and it will
crack like glass. A hard impact can break it like glass.
Unless it's thick.
It has some flex, but not much. (unless it's thin).
A lot of people have been injured
trying to break lexan windows,
while throwing big rocks (or shooting air rifles) at it, only to have
the projectile
bounce right back at them..
