The Jet Pack is a piece of equipment that enables flight. Originally inspired by the Buster Hero: Air Jet, the jet pack was developed by U.A. Support Course prodigy, Mei Hatsume.
Mei Hatsume's jet pack is a metal backpack with twin turbines that activate when the user presses a hand-held red trigger. The powerful ignition from the turbines enables short distance flight.
My Hero Academia Manga: Chapter 27.
My Hero Academia Manga: Chapter 28.
My Hero Academia Anime: Episode 17.