The Neon Vest is made of water resistant and ultra-light material. The lights are durable and USB rechargeable. The light cable can easily be slid in or out the vest for the right size as teh front light adjusts to the most comfortable position. You can easily put on this one-size cardigan with the help of two press studs and a velcro closure at the front. For increase safety while outdoors, the Neon Vest also has reflective prints.