Carbonite

"Oh, they've encased him in carbonite. He should be quite well protected. If he survived the freezing process, that is."

- C-3PO

Carbonite referred to metal blocks produced by carbon-freezing. It could be used to place people in hibernation. During the Clone Wars, Obi-Wan Kenobi, Anakin Skywalker and the clone troopers under their command froze themselves in carbonite to smuggle themselves into the Citadel.

During the Galactic Civil War, Skywalker, now Darth Vader, intended to trap his son Luke in carbonite. Having blackmailed Lando Calrissian into letting him use the carbon-freezing facility on Bespin, he tested the device out on Han Solo. Boba Fett transported the carbonite block to Jabba the Hutt's palace, where Jabba displayed it as a trophy.

Being frozen in carbonite could result in hibernation sickness, symptoms of which included temporary blindness.

Appearances

 * Star Wars: Episode V The Empire Strikes Back
 * Star Wars: Episode VI Return of the Jedi
 * Star Wars: Episode VI Return of the Jedi