Painter's cover-up is a term used to describe a type of clothing worn by painters to protect their clothes from paint splatters and other messes. The most common type of painter's cover-up is a SMOCK, which is a loose-fitting garment with long sleeves and a high neckline. Smocks are usually made of lightweight, breathable fabric and come in a variety of colors and styles. They are designed to be comfortable and easy to clean, making them an ideal choice for painters.