This smartphone case can be attached to the shoulder harness of a backpack. It uses cushioning and stretchy material, and can also be attached to a waist belt with the body's clip. This is a used item that has been used several times. - Brand: mont-bell - Color: Black - Size: M Approximately 16.5cm in height, 8.5cm in width (These are actual measurements, not the manufacturer's stated values. Please allow for some margin of error.) Thank you for looking.