Direction Indicators: This cycling vest features 4 LED signals for left turn, right turn, forward and stop. Simply press the corresponding button on the included wireless remote control to activate the turn signals. LED lights provide clear signals to pedestrians and drivers, reminding them to keep a safe distance from you. SAFETY GUARANTEED: Our lightweight backpack is equipped with reflective strips and LED signal lights, which provide greater visibility and safety at night, greatly improving your safety while riding. Easy to assemble: Place the vest directly on your back or on top of your backpack and adjust via its 2 length-adjustable straps and two straps at the waist. USB Rechargeable: Includes built-in high-capacity battery, saving battery costs and battery replacement time. Equipped with reflective strips, this reflective vest is an essential accessory for cycling safety.