This is a Porter Yoshida & Co. business bag. It has a zipper on the outside that allows you to expand the width, making it adaptable to the amount of luggage you carry. The back has three open pockets suitable for storing smartphones, pass cases, etc. The interior has pen holders and many pockets, making it functional and easy to use. The included shoulder strap from the time of purchase will be provided separately. Please review the photos before purchasing, as this is a used item. Size: Height 28cm, Width 42cm, Depth 5cm (Depth when expanded: 11cm) Color: Black Features: 2-way Color: Black