Product Description Material: ABS+Nylon Size: 25 * 25 cm Control distance: 3 meters Working time: 12-15 hours Color: yellow, dark gray Quantity: 1 piece Package content: 1 piece * Cycling vest bag 1. Safety shoulder strap and adjustable: Light touring backpack with reflective strips and signal LEDs for better visibility and safety at night. 2. Easy to use: Control wirelessly with 4 signals (left, right, forward, stop), remind passengers and drivers to keep the distance. 3. USB charging: Charge from your computer or any device using the USB port, no more wasted money on batteries again. 4. Good Breathability: Back pocket padding the tie rod for holding your cards and money while improving breathability and comfort. 5. Adjustable strap: Shoulder strap and the adjustable waistband for fit your body perfectly.