Adjustable: Fit your body perfectly with adjustable shoulder straps and an adjustable waistband. Material: Made from nylon, PC and ABS. Signal vest: Get a wireless LED cyclist signal light vest. 2 colours: Get it in either yellow or grey. LED: Stay safe at night with reflective strips and signal LEDs. Safety: Wirelessly signal drivers which direction you're going, left, right, forward, and when you're stopping! Wireless Led Cyclist Signal Light Vest | Black | Living Social