The popular style name of the Z04 is small square bag which is purely applicable to the youth and the applicable scenario is leisure and semi-casual places. The sales channel type of the bag, Z04 is the shopping malls with paragraph style which is online and offline sales. The style of the bag is messenger bag and the backpack style is the shoulder messenger portable way. The texture of the bag is PVC and the material of the bag is first layer of leather. The closed way of the Z04 is the zipper style and the internal structure of the bag is zipper pocket bag style. The bags outer bag type is the inside pouch and the popular detailing given in the bag is a self-design pattern. The pattern is plain and the bag’s hardness type is soft type. The condition of the messenger bag, Z04 is new and the material used inside the messenger bag is polyester. The shape is vertical section square style and the shoulder strap style is single strap type.