This fluorescent high visibility EMS safety vest keeps personal and medical equipment close at hand. This MCI vest is designed for Mass Casualty Incidents and medics who require both a pack and a highway EMS safety vest. One adjustable size fits everyone on staff comfortably. This EMS safety vest is also an ergonomic alternative for medics who cannot (or choose not to) wear a backpack. Not only just for Medics, make sure your traffic controllers, crossing guards, parking operators, road crews and other outdoor workers are visible to the traffic around them.