A lab coat is a protective garment worn in laboratory settings, typically made of white or light-colored fabric. It is designed to provide a barrier between the wearer's clothing and any potential hazards or contaminants present in the lab environment. The lab coat helps to minimize the risk of contamination, protect against chemical spills or splashes, and maintain cleanliness in the laboratory. It is an essential piece of attire for scientists, researchers, and other professionals working in scientific and medical fields.