The Rocket Boots are an accessory which allows a player to fly for a ~1.6 second period (approximately 100 frames) by pressing and holding the jump key in the air. The Rocket Boots will recharge as soon as you touch a solid block, or if you use a Grappling Hook or any grappling device. They are sold by the Goblin Tinkerer.
If a player uses a Cloud in a Bottle and/or Shiny Red Balloon, the total possible jump height can be increased significantly.
If the player is wearing Shadow Armor, the rocket effect’s color changes to match the armor color. (This also works if said armor is equipped in the social slot.)
Although the Rocket Boots will not appear to activate if they are worn with wings, the player's jump height when both wings and boots are equipped will be higher than if only one or the other was equipped.
Rocket boots in use with Shadow Armor equipped to the left. To the right, Rocket Boots are in use with Meteor Armor equipped. Notice the purple flame effect when using the Rocket Boots with Shadow Armor.