Jumping Boots

The Jumping Boots are an accessory found in Mario & Luigi: Superstar Saga + Bowser's Minions, obtained in Woohoo Hooniversity after beating the Laser Snifit at the entrance. It grants the ability Jump Master, which allows Mario or Luigi to jump unaffected by changes to his weight, such as when he is affected with Heavy G or when a passed out brother is on his shoulders.

In-game description

 * Jump normally even when affected by Heavy G, Light G, or when a Bro is on your shoulders!