Terrarian adventurers have a lot of neat accessories to help them scout their world, but one of the most sought-after ones is the Jet Boots. These boots provide the wearer with the ability to ascend into the sky with great speed. It's like having your very own private rocket propulsion system strapped to your feet! Using the rocket boots enables players to reach previously unreachable elevations, making exploration easier. With these boots, Terraria becomes a true vertical adventure!

Flight Official Terraria Wiki