Warto insultingly referred to Chewbacca as a "hair shirt." Early in the Second Galactic Civil War, scientist-turned-spy Toval Seyah took a trip from his position aboard Centerpoint Station to Coruscant to train Jacen Solo and Ben Skywalker to destroy the superweapon. In order to maintain the pretense that he had been on vacation, he wore a shirt typical of wealthy tourists upon his return. This shirt was made of plastic and had embedded electronic circuitry which displayed bright and colorful designs which changed whenever the shirt was poked with sufficient force. The shirt also emitted a pleasant "boop" noise each time the pattern changed.