Polyester has pale skin, red eyes, and gradient purple-blue hair styled in a bowlcut which covers his left eye. His accessories include a black choker and a black charm that resembles the kanji for "heaven" (天). He wears a sleeveless, V-neckline white spandex bodysuit along with white gloves. His bulge is also visible. Polyester has a very high ego due to the amount of new-age technology he uses. He also uses 'Gen Z slang' (AAVE) such as "On God" and "ick".