Terrarites have a lot of neat accessories to help
them scout their world, but one of the desirable ones is the Rocket Boots. These boots provide the wearer with the ability to ascend into the sky with impressive velocity. It's like having your very own private rocket propulsion system strapped to your feet! Using the rocket boots permits players to access previously inaccessible elevations, making exploration easier. With these boots, Terraria becomes a true vertical adventure!
Rockets Terraria Wiki