Butterfly knives, also known as balisongs, are folding pocket knives with two handles that counter-rotate around the tang. Originating from the Philippines, they are used for both utility and flipping tricks. The blade, typically narrow and pointed, tucks neatly between the handles when closed, ensuring safety and compactness. These knives are known for their unique opening technique, which involves flipping the handles open to reveal the blade. They are popular in various cultures and among knife enthusiasts for their dexterity-based manipulation, often showcased in skillful twirling and flipping demonstrations.