Specification: Material: elastic band + lattice reflector Style: Y Style Size: 35-47 cm * 32 * 50 cm/ 13.77-18.5*12.5 * 19.6 inch Power supply: USB charging Charging time: 2-3 hours Adjustable: 35-47cm/ 3.77-18.5 inch Color: Fluorescent Green Features: Highly Visible, 360 degrees reflective Parts List: 1 x LED Reflective Vest 2 x USB Cable A?AlBuilt-in LED LightA?a?This reflective vest has built-in LED flashes. As a result, the visibility at night is 10 times higher than that of other reflective gear. Ensure your safety when running, biking, walking, riding a motorcycle, etc. A?AlUSB RechargeableA?a?This reflective vest has a built-in rechargeable battery, charged by USB, can be connected to a computer adapter, etc., charging time of 2-3 hours, can be used for a long time. A?AlHighly VisibleA?a?This reflective vest is 360 degrees reflective to keep you safe during the day or night for any weather conditions, like rain, fog, and dark areas. A?AlAdjustableA?a?This reflective vest uses an elastic waistband, so the waist and shoulder can be adjustable. The waist adjustment is 32*50cm; the shoulder adjustment is 35-47cm, so you can comfortably wear this LED reflective vest. Suitable for adults and teens. A?AlWidely UsedA?a?The LED reflective vest is combined with LED flash and reflective equipment. Suitable for running, biking, walking, hiking, motorcycle riding, and other activities and can keep you safe.