1Selected highquality reflective materials, lightweight and easy to operate, simple to use. 2It can produce strong reflection effect when light is irradiated, and improve the visibility of night riding. 3Six colors are free to choose, and you can design and match by yourself to create a unique style. 4Bicycle wheel rims reflective stickers, the whole size is 21.5x10cm/8.5x3.9in, and single size is 20.8x0.8cm/8.2x0.3in. 5Suitable for disc brakes and V brakes, V brakes need to be installed on the inner side of the wheel.