High-visibility (HiVis) clothing is designed to make the wearer easily noticeable to others, especially in low-light, poor-weather, or high-risk environments. This type of apparel features bright, fluorescent colors for daytime visibility paired with retroreflective elements that bounce light back to its source, making workers highly distinct under vehicle headlights at night. It serves as an essential safety layer for personnel in industries like construction, traffic control, and logistics, significantly reducing the risk of workplace accidents by ensuring workers remain visible to moving vehicles and heavy machinery.