1、Light weight and comfortable to wear, you will fell no restrain while wearing it 2、4pcs bright LED lights and LED left and right dual control independent drive 3、Reflective belt length is adjustable from 60cm to 100cm, and the reflective distance is up to 200 meters 4、Convenient to install and comes with built-in button cell batteries 5、Designed specifically for people who love night running, cycling, sports and keep their safety Features: Light weight and comfortable to wear, you will fell no restrain while wearing it. 4pcs bright LED lights and LED left and right dual control independent drive. Reflective belt length is adjustable from 60cm to 100cm, and the reflective distance is up to 200 meters. Convenient to install and comes with built-in button cell batteries. Designed specifically for people who love night running, cycling, sports and keep their safety. The belt is washable after get down the LED. Specifications: Light Color: Red, Yellow, Green, Blue, Purple Waist: 60cm/23.6"~100cm/39.3"(adjustable) Fiber Length: 130cm/51" Belt Reflective Distance: 200meters/218yards Battery: CR2032 Quantity: 1 Installation Method: 1, Put fibers through the belt between buckles. 2, Insert fiber ends into the holes on LED. 3, Stick the LED on belt's hook&loop. 4, Put fibers in order. Package Includes: 1 x Led Vest