Protects it from item theft.
Sticky Hold is an ability that prevents the Pokémon's held item from being removed by other Pokémon's moves or abilities. This means that if a Pokémon with Sticky Hold is holding an item, opponents cannot use moves like Knock Off or abilities like Thief to take that item away. Sticky Hold is particularly useful for Pokémon that rely heavily on their held items for battle strategies, as it ensures they can maintain their advantages throughout the fight.