LED reflective arm bands can provide runners with ultra-high 360 visibility at night, providing highly visible reflective and LED light sources in low visibility environments. Make you safer in night running, morning running, cycling. Suitable for dog walking, hiking, camping and walking. The internal diameter of the wear size can be adjusted for different age groups and different body types. LED light-emitting arm band has three light source modes, slow flashing, fast flashing, static, different modes to make the person wearing it become more unmissable. Even when the LED light source is turned off, the new reflective strip reflects the light source from surrounding and distant vehicles to improve visibility. Makes you eye-catching in low visibility environments. Safer to move at night.