A butterfly knife, also known as a balisong or a fan knife, is a folding pocket knife that originated in the Philippines. It has two handles that rotate so that when closed, the blade is hidden in between the two handles. It then latches to hold the handles together. If you are new to butterfly knives, you may want to check out our Training Knives as well! Check out the best butterfly knives you can buy under $100 below.
