A backpack is a versatile and convenient bag designed to be carried on the back, supported by two shoulder straps. It is commonly used by students, travelers, hikers, and commuters to carry books, clothes, gadgets, or other personal items. Most backpacks come with multiple compartments and pockets, making it easy to organize and access belongings. Made from materials like nylon, canvas, or leather, backpacks vary in size, color, and design to suit different needs and styles. Their hands-free design makes them ideal for everyday use and long journeys alike.