Pop-Chips bags

What is this incredible material being used, for all things, to package potato chip-like crunchy snacks called “Pop Chips”?

This is a flexible, but incredibly sturdy material.  If you try to open a bag with your bare hands, you’ll likely as not be met with frustration, and if you do succeed, a bag full of crushed chips.

NASA ought to investigate this – it seems like it’d be a great protective covering for space shuttles and other vehicles!  Perhaps police departments could use it to make thinner/lighter bulletproof vests (so much for Kevlar).