REFLECTIVE BACKPACK ATTACHMENT CLIP: Lightweight and easy to attach to backpack without adding extra burden, reflective strips and LED signal lights provide better visibility at night. MULTIPLE MODES: The reflective backpack is equipped with reflective strips and LED lights, and wireless control 4 signals (left, right, forward, stop), reminding passengers and drivers to keep their distance, this which can improve nighttime visibility and safety. USB RECHARGEABLE: The flashing LED backpack clip rechargeable design helps you save battery cost, and it is very convenient charge from your computer or any device with a USB port. SIGNAL REMOTE: Attach the wireless transmitter to your bike's handlebars for easy control, and the adjustable bungees fit perfectly in your bag. HIGH QUALITY MATERIAL: Made of high quality nylon and polyester, waterproof and tear resistant, waterproof and durable, lightweight and easy to carry. Perfect for cyclists who want to be safe or those who like to run at night.