[Be Seen, Be Safe] The LED reflective vest is bright at night and provides high visibility to protect you, and the LED night running equipment is clearly visible even in harsh environments at 1000 feet. [Rechargeable] Simket will provide you with a reflective vest with 2 mini - USB so that the vest can be charged on both the front and the back. We have greatly increased the battery charging speed and battery life, allowing the reflective vest to LED to meet a long battery life of more than 48 hours on a single charge. Lighting Mode There are three lighting modes, fast flash, slow flash and constant light. Various lighting modes give you a variety of choices. Ensure that you are 100% visible in the dark and have a good warning effect on vehicles in the distance. Even on rainy and foggy days, its existence cannot be ignored. And has a waterproof function [Adjustable Comfort] 33-inch reflective running vest 65 inches shoulder length and 26 inches to 49 inches waist. Just slide the buckle to get a size suitable for all ages and genders. Reflective vest only 110G, uncomfortable to wear, moderate elastic, durable and will not fall off