Super Bright : The updated LED warning vest has super bright LED lights and a reflective tape that allows you to be visible from a distance of 600 feet and are safer. Comfortable and high-quality materials: this reflective running belt is made of high-quality materials. It is skin-friendly, comfortable and freely adjustable and suitable for men, women and children. 8 Lights & 3 Modes: This running vest has two sides with bright 4 LED strips with red light, so you can be seen 360 degrees. Both sides of the LEDs have three modes: steady on, fast flash, slow flash. You can freely choose your preferred working . Designed for your safety: This high visibility vest offers you a powerful front light, a safety warning tail light and a 360 degree view Lightweight and Versatile : With four adjustable buckles and an elastic strap, your LED safety vest can be easily worn over a t-shirt, sports equipment, winter coat or any kind of clothing at any time of year. Improve your safety when running, cycling,motorcycling, jogging, playing children, steering traffic and much more. The battery can be replaced. The battery model is CR2032. Chest strap is suitable for most body types. The adjustment range for the waist band circumference is 27.5 - 39.7 inches. Specification: Length: 30-43 cm / 11.8-17 inches adjustable Waist circumference: 70-100 cm / 27.5 - 39.7 inches adjustable. Width : 3.8cm / 1.5 inch Width elastic band LED lights: two sets front and rear, each 4 LEDs, usually red lights. Package Includes: 2 x LED Reflective vest