1. Using high-brightness reflective materials, it can be used on the spokes of motorcycles, bicycles and other vehicles. 2. The reflective effect is very good, it is safer to ride at night, and it can also make your bike cooler at night! 3. Easy to install, can be fixed on the spokes of the wheel. 4. Not afraid of sun and rain. No battery is needed and can be used for a long time.