I bought this new but never used it, so I'm selling it. This is a smartphone case that can be attached to the shoulder harness of a backpack. It uses cushioning and stretchy material, and the clip on the main body allows it to be attached to a waist belt, etc. Specifications: 【Material】3mm thick foamed rubber [double-sided jersey] 【Weight】60g 【Size】Height 18.5 x Width 9.5cm 【Compatible Smartphone Size】Height 16.5 x Width 8.5 x Thickness 0.9cm * Depending on the shape of the smartphone, it may not fit.