A rug pad is a protective layer placed underneath a rug to enhance its performance and longevity. It helps prevent slipping, reducing the risk of accidents, and keeps the rug in place on various surfaces, such as hardwood or tile floors. In addition to safety, a rug pad provides cushioning, making the rug feel softer underfoot. It can also help to absorb sound and protect the flooring from scratches or damage caused by the rug's backing. Overall, a rug pad is an essential accessory for maintaining both the rug and the floor beneath it.