[Compact and Portable] With a diameter of 5cm, the arm strap bike mirror is compact and does not take up too much space. It is easy to store and carry with you wherever you go.[Versatile Application] This mirror is suitable for many and motorcycles. It provides convenience and safety for riders of all kinds of vehicles.[Convex Design for A Wider View] With its convex design, this arm wear mirror allows you to see farther and have a wider view. It enhances your safety while riding.[Breathable and Comfortable Wrist Strap] The mirror features a nylon wrist arm strap that is made of breathable and comfortable material. It ensures a painless and comfortable wearing experience during your rides.[Easy to Use Black Style] The rear view mirror comes in a black style that is universal and easy to use. Simply strap the mirror around your wrist for added safety during your rides.Spec:Item Type: MirrorMaterial: ABS, NylonProduct Color: BlackDiameter: 5cmPackage List:1 x Mirror