Increase night time visibility with this cool spider bicycle spoke light! Black spider legs, with red details and flashing red light make a child’s bicycle stylish and safe! Fasten onto spokes, when bike is in motion the spoke light will automatically light up! Long lasting replaceable alkaline batteries included. WARNING: NOT FOR USE BY CHILDREN UNDER THE AGE OF 5. CHILDREN SHOULD BE SUPERVISED AT ALL TIMES WHILE RIDING A BICYCLE AND SHOULD NEVER RIDE ON THE STREET. THIS PRODUCT IS DESIGNED FOR BICYCLE USE ONLY.