Buckle straps are adjustable fasteners commonly used in various applications, such as clothing, bags, and outdoor gear. They consist of a strap and a buckle that allows for easy tightening or loosening, providing a secure fit. These straps can be made from materials like nylon, leather, or polyester, making them durable and versatile. The design of buckle straps often includes a prong or latch mechanism that holds the strap in place. They are popular in items like backpacks, belts, and safety harnesses, ensuring that users can easily adjust the fit for comfort and security during use.