Locomotion tube

Locomotion tubes were part of an Ithorian's anatomy. After the metamorphosis, Ithorians all locomotion tubes.

Behind the scenes
Locomotion tubes were first mentioned in Monsters and Aliens from George Lucas, a book published in 1993. Lucasfilm employee Leland Chee, who maintains the Holocron continuity database, has indicated that information contained in the book is non-canonical. It was later made canonical with the publishing of Musings of an Ithorian on Star Wars Hyperspace.