1、HIGH VISIBILITY: Designed with a headlight and 360 degree LEDs to provide maximum visibility and safety for night running and cycling. Switch between single color and eye catching multi color flashing modes. The Lighting modes provide you with high visibility and warn oncoming motorists. 2、EASY TO CONTROL: Cleverly placed brightness controls and mode settings on the front of the undershirt for easy access. A quick press of the front mounted button lets you switch between the front and rear LEDs, adjust the brightness level, and turn the lights on or off. 3、ULTRA LIGHTWEIGHT, PORTABLE DESIGN: Ultra portable design and high tech materials make the undershirt lighter, making it less burdensome for you to run or ride. Thoughtful anti slip technology ensures that it stays close to your body even when you sweat, allowing you to focus on your pace. 4、POWERFUL BATTERY: Equipped with a powerful battery to keep you visible on your longest night runs. The durable, long lasting battery provides reliable, uninterrupted light when you need it most. More power, longer extra visibility. 5、EASY TO ADJUST: The fully adjustable buttons on the adjustable running undershirt allow you to customize it to fit a variety of shapes and sizes, providing personalized comfort. Effectively reduce chafing and sweat. Item Type: LED Reflective Running Vest Material: ABS Endurance: 4-8 Hours Brightness: 120lm Battery Information Lithium Ion Battery 1500mah (Ships with Built In Battery) 1 x LED Reflective Running Vest 1 x Charging Cable 1 x Manual