A pocket knife is a small, foldable knife that can easily fit in a pocket. It typically features one or more blades that can be opened and closed, making it convenient for various tasks. Pocket knives are often used for cutting, slicing, and other everyday activities, and they can also include additional tools like screwdrivers, scissors, or can openers. These versatile tools come in many designs and sizes, catering to different needs and preferences. Some pocket knives are designed for outdoor activities, while others are more suited for everyday carry. Popular brands include Victorinox and Gerber, known for their quality and durability.