MECO LED Flashing Glow Reflective Armband Visible Hiking Jogging Bicycle (Red) It can be used in early morning or at night, even in any dark place when you running, cycling, jogging etc. Bright LED for Active illumination C Flashing Mode: Quickly Flashing / Slowly Flashing/ Lighten up (controled by the button) Material: Nylon Length: Approx. 36-51cm Width: Approx. 4cm Color: Blue