The ca-002 series of backpacks is designed for active people who work in a variety of styles. The main feature of the ca-002 series is the over 1-meter opening, which is made possible by its unique structure, and the unprecedented ease of loading and unloading. It is also equipped with a sub compartment, laptop compartment, back pocket, self-supporting function, and a function to prevent luggage from falling out, and the back is designed with a curved surface that conforms to the human body. The simple yet distinctive form was created to optimally realize various functions.