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, laptops, clothing, and other essentials. Most backpacks come with multiple compartments for organized storage, padded straps for comfort, and durable materials to withstand daily wear and tear. Whether for school, work, or adventure, a backpack offers hands-free mobility and efficient space management.