The LED Reflective Vest is bright at night and has high visibility to protect your , even in the harsh environment of 1000 feet away, the LED night running equipment can be clearly seen. Equipped with three lighting modes, fast flash, slow flash, always bright, various lighting modes provide you with a variety of choices. that you can be seen 100% in the dark environment, and can play a good alerting effect on vehicles in the distance. The reflective running vest shoulder length has been expanded from 30 inch to 60 inch , and the waist circumference has been expanded from 27 inch to 41 inch. Just slide the buckle to achieve a size suitable for all age and gender. And the Reflective Vest is only 125 grams ,It doesn't feel like wearing it, the elasticity is suitable, it is , and it will not fall off. Providing you with 360-degree ultra-high visibility in low-visibility scenes and activities such as early morning and night, suitable for morning or night running, cycling, walking, pet walking and other activities. Material: Ribbon colour: fluorescent green Package Contents: 1 x Reflective Running Vest 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.