A backpack is a versatile and practical 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, and other essentials. Backpacks come in various sizes, colors, and materials, often featuring multiple compartments for organized storage. Their ergonomic design helps distribute weight evenly, making them comfortable for long periods of use. Whether for school, work, or adventure, a backpack is an essential companion for carrying belongings efficiently and securely.