Synthskin/Legends

Synthskin was a medical technology very similar to Human flesh. Human replica droids, most prosthetic limbs, and General Grievous's gutsack were all covered in synthskin. It was very similar to synthflesh.

Synthskin seems to have been mistakenly (or colloquially) refered to as synthflesh while talking about prosthetic limbs.

Appearances

 * Star Wars Episode III: Revenge of the Sith
 * Star Wars Episode V: The Empire Strikes Back