Packaging?

Imagine a package.

Now, imagine that this package has to protect something fragile, an ancient vase maybe.

If you are picturing something big, heavy and filled with padding material, forget it.

Imagine a sort of envelope, capable of copying perfectly the shape of its content, while providing an impressive grade of protection without using lots of space and padding.

Also, imagine that this envelope can be re-used potentially an unlimited number of times, and that you could of course protect a different object every time.

Now, what if we told you that it's possible to mail a raw egg in an envelope?